Core-passing oscillation device for assisting electric control testing and adjusting instrument

Abstract

The invention relates to the technical field of well logging testing, in particular to a core-passing oscillation device assisting an electric control testing and adjusting instrument, and the core-passing oscillation device is characterized in that a step is arranged on the outer side wall of a jarring center rod; the jarring center rod is sleeved with the jarring outer cylinder, and the bottom end of the jarring outer cylinder is clamped above the step; a telescopic cable is arranged in a cable bin of the outer jarring cylinder, one end of the telescopic cable is connected with a cable head through the top end of the outer jarring cylinder, and the other end of the telescopic cable penetrates through the center jarring rod to be connected with a cable head of an electric control testing and adjusting instrument. The jarring center rod and the jarring outer cylinder are connected and locked through a clamping and locking mechanism, and the clamping and locking mechanism is used for unlocking when the jarring outer cylinder is subjected to upward pulling force larger than a preset value, so that the jarring outer cylinder can reciprocate along the outer side wall of the jarring center rod. The problems that an existing oscillator structure cannot meet the requirement for application in cooperation with an efficient testing and adjusting instrument, the efficient testing and adjusting instrument is prone to being clamped in a tubular column in the using process, the working efficiency is seriously affected, and meanwhile the operation cost and material loss are increased are solved.

Description

Technical Field

[0001] The invention relates to the technical field of well logging and testing, and in particular to a core oscillating device assisting an electric control measuring and adjusting instrument. Background Art

[0002] During the water injection development process of oil fields, testing and adjustment work is an important way to ensure effective water injection. Affected by the quality of downhole tools, sand return, heavy oil and other issues, the test instrument often gets stuck. In order to prevent the test from getting stuck, a traditional mechanical oscillator must be installed on the top of the instrument during the test of conventional testing and adjustment instruments. The traditional mechanical oscillator consists of a clamping joint, a jacket, a center rod, a spring, a stopper, a pin, a locking block, etc. When the instrument is stuck, the locking plate of the oscillator is pulled open under a certain tensile load, and the main body is separated from the jacket, forming a stretchable and shrinkable impact stroke, so that the impact force of the stroke can be used to release the instrument.

[0003] In the middle and late stages of oilfield exploitation, with the application of technologies and new processes such as high-efficiency measuring and adjusting instruments, the testing efficiency has been significantly improved. High-efficiency measuring and adjusting instruments need to be connected to cables when in use, but due to structural characteristics and other reasons, the cables of traditional oscillators cannot achieve core penetration compatibility and cannot be directly applied to high-efficiency measuring and adjusting instruments. The cables are easily clipped during use, and the cables are easily pulled apart when the oscillator expands and contracts.

[0004] At present, various high-efficiency measuring and adjusting instruments used in oilfield water injection wells do not have the function of oscillating to release the jam. The inability to use oscillators causes the high-efficiency measuring and adjusting instruments to be stuck by sand, heavy oil, quality problems of downhole tools, etc., and the instruments often get stuck in the tubing column and cannot go up or down. It is very easy to get the instrument stuck. Forcibly pulling to release the jam will cause the cable to break and the test instrument to be damaged. It is difficult to handle in the later stage and the operation is difficult, resulting in job re-configuration, a large amount of operating cost expenditure and material loss, resulting in a large amount of economic losses, and seriously affecting work efficiency and production capacity construction. Therefore, it is necessary to study oscillators that can be applied to high-efficiency measuring and adjusting instruments to solve such problems. Summary of the invention

[0005] The present invention proposes a core oscillator device that assists an electronically controlled measuring and adjusting instrument, so as to solve the problem that the existing oscillator structure cannot meet the requirements of being used in conjunction with a high-efficiency measuring and adjusting instrument, resulting in the high-efficiency measuring and adjusting instrument being easily stuck in the pipe column during use, seriously affecting work efficiency, while increasing operating costs and material losses.

[0006] According to one aspect of the present invention, there is provided a core-passing oscillating device for assisting an electric control measuring and adjusting instrument, comprising: a jarring center rod and a jarring outer cylinder; The outer side wall of the shock center rod is provided with a step; The shock outer cylinder is hollow inside and has an opening at the bottom. The shock outer cylinder is sleeved outside the shock center rod, and the bottom end of the shock outer cylinder is stuck above the step. A wire bin is provided inside the shock outer cylinder, and a retractable cable is provided inside the wire bin. One end of the retractable cable is connected to a cable head through the top of the shock outer cylinder, and the other end of the retractable cable passes through the shock center rod and is connected to an electric control measuring and adjusting instrument. The shock center rod and the shock outer tube are connected and locked by a locking mechanism, and the locking mechanism is used to release the lock when the shock outer tube is subjected to an upward pulling force greater than a predetermined value, so that the shock outer tube can reciprocate along the outer side wall of the shock center rod.

[0007] Preferably, the retractable cable is: The cable in the cable bin is a spring spiral cable.

[0008] Preferably, the locking mechanism comprises: a sphere and an elastic member; A mounting groove is provided on the outer side wall of the shock center rod near the top end, the elastic member is fixed to the bottom of the mounting groove, and the ball is located in the mounting groove; A clamping groove is arranged on the inner side wall of the shock outer cylinder at a position corresponding to the mounting groove, and part of the sphere is located inside the clamping groove.

[0009] Preferably, the elastic member is: a spring; The diameter of the spring is 2-2.5 cm; The wire diameter of the spring is 1.5-2.5 mm.

[0010] Preferably, it also includes: a fixing pin; Slide grooves are arranged on two opposite side walls in the installation groove, and the fixing pin passes through the sphere, with both ends located inside the slide grooves, one end of the slide groove being close to the opening of the installation groove, and the other end being close to the bottom of the installation groove.

[0011] Preferably, it also includes: a limiting mechanism; The limiting mechanism is connected to the outer side wall of the shock center rod and the inner side wall of the shock outer cylinder respectively, and the limiting mechanism is used to prevent the bottom end of the shock outer cylinder from exceeding the top of the shock center rod when moving upward.

[0012] Preferably, the limiting mechanism comprises: a limiting ring and a fixed locking block; The limiting ring is fixed on the inner wall of the shock outer cylinder, close to the bottom end of the shock outer cylinder; the fixed locking block is installed on the outer wall of the shock center rod, close to the top end of the shock center rod; when the limiting ring moves upward to the fixed locking block, the limiting ring is stuck under the fixed locking block.

[0013] Preferably, it also includes: a core weighting rod; The top of the shock outer cylinder is connected to the core-passing weighting rod.

[0014] The present invention has at least the following beneficial effects: The present invention proposes a core-through oscillating device for assisting an electrically controlled measuring and adjusting instrument. By providing a jarring outer cylinder containing a wire bin inside and a jarring center rod through which a cable can pass, and providing a retractable cable in the wire bin to cooperate with the movement of the jarring outer cylinder, the problem that mechanical oscillators cannot match high-efficiency instruments is solved, so that when the high-efficiency measuring and adjusting instrument is stuck underground, it can be quickly and efficiently unstuck, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings herein are incorporated into and constitute a part of the specification. These drawings illustrate embodiments consistent with the present invention and, together with the specification, are used to explain the technical solutions of the present invention.

[0016] Figure 1 A schematic structural diagram of a core oscillation device assisting an electronically controlled measuring and adjusting instrument according to an embodiment of the present invention is shown.

[0017] In the figure, 1- shock outer cylinder, 2- shock center rod, 3- step, 4- wire bin, 5- retractable cable, 6- sphere, 7- elastic member, 8- mounting groove, 9- card slot, 11- fixed pin shaft, 12- limiting ring, 13- fixed locking block, 14- rubber head, 15- rubber tail, 16- upper joint, 17- lower joint. Implementation

[0018] Various exemplary embodiments, features and aspects of the present invention will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise specified.

[0019] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0020] The term "and / or" herein is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the term "at least one" herein represents any combination of at least two of any one or more of a plurality of. For example, including at least one of A, B, and C can represent including any one or more elements selected from the set consisting of A, B, and C.

[0021] In addition, in order to better illustrate the present invention, numerous specific details are provided in the following specific embodiments. It should be understood by those skilled in the art that the present invention can be implemented without certain specific details. In some examples, methods, means, components and circuits well known to those skilled in the art are not described in detail in order to highlight the subject matter of the present invention.

[0022] Figure 1 FIG. 2 is a schematic diagram showing the structure of a core oscillating device for assisting an electric control measuring and adjusting instrument according to an embodiment of the present invention. Figure 1 As shown, a core-through oscillation device assisting an electric control measuring and adjusting instrument comprises: a shock center rod 2 and a shock outer cylinder 1; a step 3 is arranged on the outer side wall of the shock center rod 2; the interior of the shock outer cylinder 1 is hollow and the bottom end is open, the shock outer cylinder 1 is sleeved on the outside of the shock center rod 2, and the bottom end of the shock outer cylinder 1 is stuck above the step 3; a wire bin 4 is arranged inside the shock outer cylinder 1, and a retractable cable 5 is arranged inside the wire bin 4, one end of the retractable cable 5 is connected to a cable head through the top end of the shock outer cylinder 1, and the other end of the retractable cable 5 passes through the shock center rod 2 and is connected to the electric control measuring and adjusting instrument; the shock center rod and the shock outer cylinder 1 are connected and locked by a locking mechanism, and the locking mechanism is used to release the lock when the shock outer cylinder 1 is subjected to an upward pulling force greater than a predetermined value, so that the shock outer cylinder 1 can reciprocate along the outer side wall of the shock center rod 2.

[0023] In the embodiment of the present invention, during installation, the top of the shock outer cylinder 1 is connected to the upper joint 16 through a fixed thread, the upper joint 16 is connected to the rubber head 14, and the rubber head 14 is connected to the cable head; the bottom end of the shock center rod 2 is connected to the lower joint 17 through the rubber tail 15, and the lower joint 17 is connected to the high-efficiency electric control measurement and adjustment instrument. The position of the step 3 is close to the bottom end of the shock center rod 2. In the initial state, the bottom end of the shock outer cylinder 1 contacts the step 3 of the shock center rod 2. At this time, the locking mechanism is in a locked state, so that the shock outer cylinder 1 and the shock center rod 2 maintain the same relative position.

[0024] When in use, the equipment is lowered into the well. When the high-efficiency measuring and adjusting instrument is stuck, the cable is pulled upward by the winch to tighten it. The cable applies an upward pulling force to the shock outer cylinder 1 through the connection part of the rubber head 14 and the upper joint 16. When the pulling force reaches a predetermined value or more, the locking mechanism releases the locking state between the shock outer cylinder 1 and the shock center rod 2, and the shock outer cylinder 1 moves upward along the outer wall of the shock center rod 2. When it moves to the upper limit of the top of the shock center rod 2, the winch controls the cable to relax downward, and the shock outer cylinder 1 moves downward along the outer wall of the shock center rod 2 due to its own gravity and contacts the step 3 of the shock center rod 2 to generate vibration. By repeatedly tightening and loosening the cable, the shock outer cylinder 1 and the shock center rod 2 continuously change their strokes to generate shocks, which increases the upward and downward reciprocating impact force, thereby achieving the purpose of unblocking the high-efficiency testing instrument. Among them, the predetermined value range is 40~120N.

[0025] Since the position of the retractable cable 5 in the rubber head 14 and the rubber tail 15 is fixed, when the shock outer cylinder 1 moves upward, the overall length of the shock outer cylinder 1 and the shock center rod 2 increases, and the retractable cable 5 in the wire bin 4 automatically extends to cooperate with the movement of the shock outer cylinder 1; when the shock outer cylinder 1 collides with the step 3, that is, returns to the initial position, the retractable cable 5 shrinks back to the initial state to prevent it from being pulled or clamped during the movement of the shock outer cylinder 1, thereby ensuring that the high-efficiency testing instrument is always powered on during the vibration unblocking process.

[0026] In the present invention, the retractable cable 5 is: the cable in the cable bin 4 is a spring spiral cable.

[0027] In the embodiment of the present invention, when the shock outer cylinder 1 is in the initial position, that is, when it contacts the step 3, the spring spiral cable is in a contracted state, that is, a natural state; in the contracted state, the spring spiral cable does not sag inside the line bin 4. When the shock outer cylinder 1 moves upward, a pulling force is applied to the spring spiral cable, and the spring spiral cable expands and stretches to cooperate with the shock outer cylinder 1 to prevent it from being pulled apart; when the shock outer cylinder 1 moves downward, the spring spiral cable contracts and returns to a natural state to prevent it from being entangled due to sag or being pinched off by the connecting part of the shock outer cylinder 1 and the shock center rod 2. Among them, the elastic diameter d of the spring spiral cable is 1.5mm, the static length L is 100mm, the expanded length A is 25cm, and the diameter of the line bin 4 is 25mm.

[0028] In the present invention, the locking mechanism includes: a sphere 6 and an elastic member 7; a mounting groove 8 is provided on the outer wall of the shock center rod 2 near the top, the elastic member 7 is fixed at the bottom of the mounting groove 8, and the sphere 6 is located in the mounting groove 8; a locking groove 9 is provided on the inner wall of the shock outer tube 1 at a position corresponding to the mounting groove 8, and part of the sphere 6 is located inside the locking groove 9.

[0029] In the embodiment of the present invention, two locking mechanisms are symmetrically arranged inside the device, and the ball 6 is made of steel. In the initial state, most of the ball 6 of the locking mechanism is in the installation groove 8, and a small part is in the slot 9. Through the thrust of the elastic member 7, the ball 6 is pressed against the slot 9, thereby connecting and locking the shock outer cylinder 1 and the shock center rod 2, and keeping the shock center rod 2 from detaching from the shock outer cylinder 1 due to its own gravity.

[0030] When in use, the equipment is lowered into the well. When the high-efficiency measuring and adjusting instrument is stuck, the cable is pulled upward and tightened by the winch, and the cable applies an upward pulling force to the shock outer tube 1 through the rubber head 14 and the upper joint 16; at this time, the bottom of the card slot 9 of the shock outer tube 1 moves upward, thereby applying pressure to the side wall of the ball 6, and squeezing the ball 6 into the installation groove 8; when the cable tension reaches a predetermined value or more, the pressure applied by the card slot 9 to the ball 6 is greater than the elastic force of the elastic member 7, causing the elastic member 7 to deform and shrink inward, and the ball 6 is squeezed into the installation groove 8 and disengaged from the inside of the card slot 9, thereby releasing the locking state of the shock outer cylinder 1 and the shock center rod 2, and the shock outer cylinder 1 moves upward along the shock center rod 2. The ball 6 is in contact with the inner wall of the shock outer cylinder 1 due to the action of the elastic member 7 and slides along the inner wall of the shock outer cylinder 1; when the bottom end of the shock outer cylinder 1 moves to a position close to the top of the shock center rod 2, the cable is released, and the shock outer cylinder 1 moves downward to contact and shock the step 3 of the shock center rod 2, generating vibration to release the card.

[0031] When the bottom of the shock outer cylinder 1 contacts the step 3, the position of the slot 9 overlaps with the installation slot 8. Due to the action of the elastic member 7, the ball 6 is pushed back into the slot 9 to lock the shock outer cylinder 1 and the shock center rod 2. During the next shock, the cable applies tension again to make the ball 6 come out of the slot 9, and the shock outer cylinder 1 moves and impacts to generate vibration. The action is repeated until the high-efficiency measuring and adjusting instrument is unblocked.

[0032] The locking mechanism can connect the shock outer cylinder 1 and the shock center rod 2 before unlocking, which is convenient for lowering into the well. It can automatically lock after each shock is completed, thereby facilitating the subsequent lowering and removal of the high-efficiency measurement and adjustment instrument.

[0033] In the present invention, the elastic member 7 is a spring; the diameter of the spring is 2-2.5 cm; the wire diameter of the spring is 1.5-2.5 mm.

[0034] In the embodiment of the present invention, one end of the spring is connected to the bottom of the installation groove 8, and the other end is in contact with the ball 6. The elastic force of the spring needs to be greater than the gravity of the shock center rod 2 and the equipment connected below, so as to ensure that part of the ball 6 is always stuck in the slot 9 when going down the well, preventing the shock center rod 2 from being separated from the shock outer cylinder 1. At the same time, the spring elastic force should be less than the maximum tension that the cable can withstand, so that it can be deformed under the action of the cable tension, so that the ball 6 can be separated from the slot 9.

[0035] The present invention also includes: a fixed pin 11; a slide groove is arranged on two opposite side walls in the installation groove 8, the fixed pin 11 passes through the sphere 6, and both ends are inside the slide groove, one end of the slide groove is close to the opening of the installation groove 8, and the other end is close to the bottom of the installation groove 8.

[0036] In the embodiment of the present invention, the fixed pin 11 is horizontally arranged in the mounting groove 8. One end of the slide groove is close to the spring, and the other end is close to the opening of the mounting groove 8. When the shock outer tube 1 squeezes the ball 6 inward, the ball 6 drives the fixed pin 11 to move along the slide groove toward the spring, thereby disengaging from the slot 9; when the slot 9 overlaps with the mounting groove 8, the spring rebounds and pushes the ball 6 into the slot 9, thereby driving the fixed pin 11 to move along the slide groove. The fixed pin 11 and the slide groove are used to fix the ball 6 in the mounting groove 8 to prevent it from rolling up, down, and in different directions or disengaging from the mounting groove 8 during movement.

[0037] Among them, the diameter of the opening of the slot 9 is larger than the bottom diameter of the slot 9, so that the side wall of the slot 9 has a certain inclination angle, that is, the overall shape of the inside of the slot 9 is bowl-shaped, which can facilitate the ball 6 to slide out or enter the slot 9.

[0038] The present invention also includes: a limiting mechanism; the limiting mechanism is respectively connected to the outer wall of the shock center rod 2 and the inner wall of the shock outer tube 1, and the limiting mechanism is used to prevent the bottom end of the shock outer tube 1 from exceeding the top of the shock center rod 2 when moving upward.

[0039] In the embodiment of the present invention, the diameter of the shock outer cylinder 1 is 42 mm, and the distance from the step 3 on the shock center rod 2 to its top end is 450 mm.

[0040] The limiting mechanism can be arranged at 350 mm from the step 3 to the top of the shock center rod 2, so that the upward movement stroke of the shock outer cylinder 1 is 350 mm. The position of the limiting mechanism can be adjusted as needed.

[0041] In the present invention, the limiting mechanism includes: a limiting ring 12 and a fixed locking block 13; the limiting ring 12 is fixed on the inner wall of the shock outer cylinder 1, and is located close to the bottom end of the shock outer cylinder 1; the fixed locking block 13 is installed on the outer wall of the shock center rod 2, and is located close to the top end of the shock center rod 2. When the limiting ring 12 moves upward to the fixed locking block 13, the limiting ring 12 is stuck under the fixed locking block 13.

[0042] In the embodiment of the present invention, the position of the limit ring 12 corresponds to that of the fixed locking block 13 and is in a straight line. The position of the fixed locking block 13 on the shock center rod 2 is set according to the required stroke length, such as being set at 350 mm upward from the step 3. When the card is released, the shock outer cylinder 1 drives the limit ring 12 to move upward. When the limit ring 12 moves to the bottom of the fixed locking block 13, it is stuck by the fixed locking block 13, so that the shock outer cylinder 1 reaches the maximum upward stroke, preventing the shock outer cylinder 1 from detaching from the shock center rod 2.

[0043] When a traditional oscillator is limited, a long strip hole is set on the outer jacket, and a protrusion is set on the side wall near the bottom of the internal center rod to insert into the hole. When impacting, the protrusion moves up and down in the hole, and gets stuck when it reaches the top and bottom of the hole, thereby achieving the purpose of limiting. However, this method will expose the inside of the outer jacket to the well fluid. If a cable passes through the inside, the cable will directly contact the well fluid. At the same time, when the center rod moves up and down, it is easy for the cable to get stuck in the hole, and when impacting, it will be squeezed by the protrusion and cause damage to the cable. The present invention arranges the cable inside the shock outer cylinder 1 and the shock center rod 2. The shock outer cylinder 1 is wrapped around the outside of the shock center rod 2. The limiting mechanism is also inside the impact sleeve and does not directly contact the cable, thereby ensuring the safe use of the cable.

[0044] The present invention further comprises: a core-through weighting rod; the top of the shock outer cylinder 1 is connected to the core-through weighting rod.

[0045] In the embodiment of the present invention, the cable passes through the core weighting rod and is connected to the rubber head 14. When the jam is released, when the shock outer cylinder 1 falls and hits the step 3 by its own gravity, it may not achieve a stronger vibration effect due to insufficient gravity and stroke length limitation, and the jam cannot be released smoothly. Connecting the core weighting rod above the shock outer cylinder 1 can increase the weight of the shock outer cylinder 1, so that the vibration generated during the shock is stronger and the jam release effect is better.

[0046] In the embodiment of the present invention, the core oscillation device is 30 cm long and is mainly made of high-strength carbon manganese steel. It is connected between the cable head and the high-efficiency measurement and adjustment instrument through a threaded connection. The rubber head 14 component installed on the upper part of the oscillation device is connected to the cable head pin, and the rubber tail 15 component installed on the lower part of the oscillator is connected to the high-efficiency measurement and adjustment communication port.

[0047] The upper connector 16, the lower connector 17, the rubber head 14, the rubber tail 15 and other components are sealed by high-pressure waterproof sealing tape and sealing rubber rings, and the waterproof insulation sealing rate reaches 100%; the tensile strength of each connection part reaches 20KN, which is greater than the tension of the cable head 5KN; the cable has the function of being able to be tapped when the test instrument is stuck, protecting the cable from damage by 100%.

[0048] It can be understood that the above-mentioned various embodiments mentioned in the present invention can be combined with each other to form a combined embodiment without violating the principle logic. Due to space limitations, the present invention will not go into details.

[0049] The existing mechanical oscillators have been used since the early days of oil field development, and their process structure has not changed. They cannot meet the needs of high-efficiency measurement and adjustment instrument applications. As a result, when the instrument is stuck, cables may be broken and operations may need to be reconfigured, affecting test efficiency and capacity construction, and causing large costs.

[0050] The present invention achieves the purpose of cable passing through by setting a cable core structure in the device, and sets a wiring compartment 4 and a spiral elastic wire to solve the problem that the cable cannot be stretched. In the stretched state, the spiral elastic wire in the wiring compartment 4 is stretched along with the shock center rod 2; in the retracted state, it can be compressed in the shock outer cylinder 1 under its own gravity to complete the reset function, ensuring that the cable will not be broken when the oscillation device is pulled apart; in the contracted state, the cable is not clamped off, thereby ensuring signal transmission. By repeatedly tightening and loosening the cable, the stroke of the shock outer cylinder 1 and the shock center rod 2 constantly changes, increasing the upward and downward reciprocating impact force, thereby achieving the working purpose of high-efficiency instrument unstuck. The device of the present invention can be directly connected to the cable head and the direct-reading flowmeter of the high-efficiency tester, and can be connected to the core weighting rod as required, without replacing the original cable head when connecting. The nesting principle is applied, and the friction coefficient brought by the size gap between the card slot 9 and the spherical limiter is enhanced, so that the shock outer cylinder 1 and the shock center rod 2 can form a locking connection when the tension is less than the tension state. A rubber head 14 is installed at the upper end of the oscillator to connect with the cable head, and a rubber tail 15 is installed at the lower end of the oscillator to connect with the high-efficiency instrument to achieve the purpose of data signal transmission.

[0051] The present invention studies the causes, conditions, states and consequences of the inability of traditional oscillators to be applied to high-efficiency measuring and adjusting instruments, analyzes them item by item, and proposes a special core-through oscillating device for high-efficiency electric control measuring and adjusting in view of the functionality and matching of existing process technologies and operating methods. The device can change the technical defects of mechanical oscillators that cannot transmit power signals, increase the functionality of tools, and solve the problem that mechanical oscillators cannot match high-efficiency instruments; through the reorganization and development of tool components, the cable and the oscillating device can be matched to the tension standard, so that the oscillating device can achieve the purpose of shocking the outer cylinder 1 and the shocking center rod 2 to separate under the tension lower than the cable pull-off limit value, and produce the purpose of stroke impact; the core-through cable can be achieved in the state of stretching and contraction without being affected by the structure and being clamped off, thereby solving the problem that the transmission cable is easy to break and cannot be stored. The success rate of unblocking the high-efficiency test instrument after it is stuck is more than 70%, which solves the technical problem that the high-efficiency measuring and adjusting instrument cannot be installed with an oscillator for unblocking, and realizes the key research goal of allowing the cable to pass through the core and changing the traditional locking of the stopper.

[0052] The invention has been tested and applied in many oil production plants in Daqing Oilfield, with 110 wells applied. During the measurement and adjustment process, the device was stuck 66 times, and the jarring operation was successfully completed. The time for unblocking the device was shortened from 40 minutes to 5 minutes, which improved the work efficiency by 87.5%, reduced the labor intensity of employees, and had the advantages of wide application range and simple operation, avoiding the damage of instruments and cable equipment and the occurrence of operation reconfiguration problems. Among them, the operation reconfiguration cost is calculated based on the average number of wells saved (66 wells / year) * the single well operation cost of 45,000 yuan / well = 2.97 million yuan; the material cost is calculated based on the reduction of cable loss of 16 reels / year * the unit price of 6,000 yuan / reel = 96,000 yuan, creating a total economic benefit of more than 3 million yuan.

[0053] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or technical improvements in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A core oscillation device assisting an electronically controlled measuring and adjusting instrument, characterized in that: include: shocking the central rod (2) and the outer cylinder (1); A step (3) is provided on the outer side wall of the shock center rod (2); The shock outer cylinder (1) is hollow inside and has an opening at the bottom. The shock outer cylinder (1) is sleeved outside the shock center rod (2), and the bottom end of the shock outer cylinder (1) is clamped above the step (3). A wire bin (4) is arranged inside the shock outer cylinder (1), a retractable cable (5) is arranged inside the cable bin (4), one end of the retractable cable (5) is connected to a cable head through the top end of the shock outer cylinder (1), and the other end of the retractable cable (5) passes through the shock center rod (2) and is connected to an electric control measurement and adjustment instrument; The shock center rod (2) and the shock outer tube (1) are connected and locked via a locking mechanism, wherein the locking mechanism is used to release the lock when the shock outer tube (1) is subjected to an upward pulling force greater than a predetermined value, so that the shock outer tube (1) can reciprocate along the outer side wall of the shock center rod (2).

2. The core oscillation device for assisting the electronically controlled measuring and adjusting instrument according to claim 1 is characterized in that: The retractable cable (5) is: The cable in the cable bin (4) is a spring spiral cable.

3. The core oscillation device for assisting the electronically controlled measuring and adjusting instrument according to claim 1 is characterized in that: The locking mechanism comprises: a spherical body (6) and an elastic member (7); A mounting groove (8) is provided on the outer side wall of the shock center rod (2) near the top end, the elastic member (7) is fixed to the bottom of the mounting groove (8), and the ball (6) is located in the mounting groove (8); A clamping groove (9) is provided on the inner side wall of the shock outer cylinder (1) at a position corresponding to the mounting groove (8), and a portion of the ball (6) is located inside the clamping groove (9).

4. The core oscillation device for assisting the electronically controlled measuring and adjusting instrument according to claim 3 is characterized in that: The elastic member (7) is: a spring; The diameter of the spring is 2-2.5 cm; The wire diameter of the spring is 1.5-2.5 mm.

5. The core oscillation device for assisting the electronically controlled measuring and adjusting instrument according to claim 3 is characterized in that: Also includes: A fixing pin (11); Slide grooves are provided on two opposite side walls in the installation groove (8), and the fixing pin shaft (11) passes through the sphere (6) with both ends located inside the slide groove, one end of the slide groove being close to the opening of the installation groove (8) and the other end being close to the bottom of the installation groove (8).

6. The core oscillation device for assisting the electronically controlled measuring and adjusting instrument according to claim 1, characterized in that: Also includes: Limiting mechanism; The limiting mechanism is respectively connected to the outer side wall of the shock center rod (2) and the inner side wall of the shock outer cylinder (1), and the limiting mechanism is used to prevent the bottom end of the shock outer cylinder (1) from exceeding the top of the shock center rod (2) when moving upward.

7. The core oscillation device for assisting the electronically controlled measuring and adjusting instrument according to claim 5, characterized in that: The limiting mechanism comprises: a limiting ring (12) and a fixed locking block (13); The limiting ring (12) is fixed on the inner wall of the shock outer cylinder (1) and is located close to the bottom end of the shock outer cylinder (1). The fixed locking block (13) is installed on the outer wall of the shock center rod (2) and is located close to the top end of the shock center rod (2). When the limiting ring (12) moves upward to the fixed locking block (13), the limiting ring (12) is stuck under the fixed locking block (13).

8. The core oscillation device for assisting an electronically controlled measuring and adjusting instrument according to any one of claims 1 to 7, characterized in that: Also includes: Core weighting rod; The top of the shock outer cylinder (1) is connected to the core-passing weighting rod.

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