Rock debris fishing and washing system

Abstract

The invention relates to the technical field of rock debris fishing, washing and sampling, in particular to a rock debris fishing and washing system which comprises a sand fishing mechanism, a sand guide pipe and a sand cleaning mechanism, the sand cleaning mechanism comprises a rack, a rotary table, a sand receiving hopper and a driving mechanism, the rotary table is rotatably mounted on the upper portion of the rack, and a plurality of vertically-through mounting holes are evenly distributed in the upper end of the rotary table at intervals along the circumference; a sand receiving hopper is arranged in each mounting hole in a sleeving manner and takes the shape of a cylinder with an open upper part and a closed lower part. The drilling machine is reasonable and compact in structure and convenient to use, by arranging the sand bailing mechanism, a rock debris sample enters the sand bailing mechanism after passing through a vibrating screen of the drilling machine, the working intensity of an operator for obtaining the rock debris sample can be reduced, the rock debris sample enters the sand receiving hopper through the sand bailing mechanism, and the driving mechanism drives the sand receiving hopper to rotate; meanwhile, the impact mechanism cleanly washes the rock debris samples in the sand receiving hopper, subsequent acquisition of rock debris sample information is facilitated, rock debris sample sampling work can be continuously carried out, and the technological requirements of well drilling and logging are met.

Description

Technical Field

[0001] The present invention relates to the technical field of cuttings fishing, washing and sampling, and is a cuttings fishing and washing system. Background Art

[0002] During the process of oil exploration and drilling, the cuttings generated are important information carriers for understanding the formation and important bases for discovering and evaluating oil and gas reservoirs. During the drilling process, it is necessary to scientifically analyze the cuttings returned from the bottom of the well in a timely manner to obtain accurate geological information of the oil well, timely master the location and depth information of oil and gas reservoirs, and provide a reliable basis for the development of oil and gas fields. The logging operation is to obtain the true formation information by real-time monitoring and scientific analysis of the formation cuttings during the drilling process, and provide a scientific and effective plan for the development of the oil field.

[0003] During drilling, the formation cuttings and drilling mud are mixed together and pumped to the ground by a mud pump. This mixture contains a large amount of mud cakes and cuttings solid particles, and it is necessary to separate them to obtain the required cuttings samples. At present in the petroleum industry, logging sand fishing is carried out manually on the vibrating screen of the drilling rig. The obtained cuttings are mixed with a large amount of soil, and then the cuttings and soil are separated and cleaned manually, which consumes a lot of manual time and cannot continuously sample. The number of cuttings samples taken is small, the efficiency is low, and it is easy to miss formation information. With the rapid development of modern drilling technology, the drilling speed has been greatly improved. It is very difficult to rely on manual fishing and separation of cuttings samples to meet the technological requirements of drilling and logging. There is an urgent need for automated logging cuttings sampling and separation equipment. Summary of the Invention

[0004] The present invention provides a cuttings fishing and washing system, which overcomes the deficiencies of the above-mentioned prior art and can effectively solve the problems of small quantity, low efficiency of the cuttings sampled in the existing logging sand fishing, and easy omission of formation information.

[0005] The technical solution of the present invention is realized by the following measures: A cuttings fishing and washing system includes a sand fishing mechanism, a sand guiding pipe, and a sand cleaning mechanism. The sand cleaning mechanism includes a frame, a turntable, a sand receiving hopper, and a driving mechanism. A turntable is rotatably installed on the upper part of the frame. A plurality of vertically penetrating mounting holes are evenly distributed at intervals along the circumference at the upper end of the turntable. A sand receiving hopper is sleeved in each mounting hole. The sand receiving hopper is in a cylindrical shape with an upper opening and a lower closed bottom. A limiting step is provided on the outer side of the upper part of the sand receiving hopper corresponding to the upper end of the turntable. A plurality of water filtering holes are distributed at intervals on the outer side of the lower part of the sand receiving hopper corresponding to the lower part of the turntable. A driving mechanism capable of rotating the turntable is provided in the middle of the frame. A sand guiding pipe is provided above the frame. The left end of the sand guiding pipe is located above one of the sand receiving hoppers. The right end of the sand guiding pipe is fixedly communicated with the sand outlet of the sand fishing mechanism capable of conveying cuttings samples into the sand guiding pipe. A flushing mechanism capable of flushing the cuttings samples in the sand receiving hopper is provided on the right side of the frame.

[0006] The following are further optimizations and / or improvements to the above-mentioned technical solution of the invention: The above-mentioned sand fishing mechanism may include a screw conveyor and a feed chute. The sand outlet is arranged on the lower right side of the screw conveyor. A feed chute is fixedly installed on the upper side of the screw conveyor. The cross-section of the feed chute is a trapezoid with a narrow upper part and a wide lower part.

[0007] The left end of the above-mentioned sand guide pipe is inclined downward relative to the right end. After the left end of the sand guide pipe is bent downward, it is fixedly connected to a funnel-shaped connector with a large upper part and a small lower part. After the right end of the sand guide pipe is bent upward, it is fixedly connected to a connecting pipe. The upper end of the connecting pipe is fixedly connected to the sand outlet.

[0008] A circulating water tank may be fixedly installed on the left side of the lower part of the above-mentioned frame. A circulating water pump is fixedly installed inside the circulating water tank. A first circulating water pipe is fixedly connected between the outlet of the circulating water pump and the connecting pipe.

[0009] An upward-opening circular water collecting box may be fixedly installed on the inner side of the upper part of the frame corresponding to the lower position of the sand receiving hopper. A second circulating water pipe is fixedly connected between the lower side of the water collecting box and the upper part of the circulating water tank.

[0010] The above-mentioned flushing mechanism may include a cleaning spray head, a cleaning water tank, and a cleaning water pump. A cleaning spray head is arranged on the upper side of the sand receiving hopper corresponding to the front position of the left end of the sand guide pipe. A cleaning water tank is fixedly installed on the right side of the upper part of the frame. A cleaning water pump is fixedly installed on the lower part of the frame corresponding to the lower position of the driving mechanism. A first cleaning pipe is fixedly connected between the inlet of the cleaning water pump and the lower part of the cleaning water tank. A second cleaning pipe is fixedly connected between the outlet of the cleaning water pump and the upper end of the cleaning spray head.

[0011] The structure of the present invention is reasonable and compact, and it is convenient to use. By setting up the sand fishing mechanism, the cuttings samples enter the sand fishing mechanism after passing through the drilling rig vibrating screen, which can reduce the working intensity of the operator to obtain the cuttings samples. The cuttings samples enter the sand receiving hopper through the sand fishing mechanism. The driving mechanism drives the sand receiving hopper to rotate, and at the same time, the impact mechanism flushes the cuttings samples in the sand receiving hopper clean, which is convenient for subsequent acquisition of the cuttings sample information, and can make the cuttings sample sampling work continuous and meet the technological requirements of drilling and logging. Description of the Drawings

[0012] Att Figure 1 is the front view structural schematic diagram of Embodiment 1 to Embodiment 6 of the present invention.

[0013] Att Figure 2 is the enlarged partial sectional front view structural schematic diagram of the sand fishing mechanism in Att Figure 1 is the enlarged sectional right view structural schematic diagram of the sand fishing mechanism in Att

[0014] Att Figure 3 is the enlarged sectional right view structural schematic diagram of the sand fishing mechanism in Att Figure 1 is the enlarged sectional right view structural schematic diagram of the sand fishing mechanism in Att

[0015] Att Figure 4For attachment Figure 1 Schematic enlarged view of the front partial sectional view of the middle frame.

[0016] Attachment Figure 5 For attachment Figure 1 Schematic enlarged view of the front sectional view of the middle sand receiving hopper.

[0017] The codes in the attached drawings are respectively: 1 is the frame, 2 is the turntable, 3 is the sand receiving hopper, 4 is the driving mechanism, 5 is the limiting step, 6 is the water filtering hole, 7 is the sand guiding pipe, 8 is the auger conveyor, 9 is the sand outlet, 10 is the feeding trough, 11 is the connector, 12 is the connecting pipe, 13 is the circulating water tank, 14 is the circulating water pump, 15 is the first circulating water pipe, 16 is the water collecting box, 17 is the second circulating water pipe, 18 is the cleaning spray head, 19 is the cleaning water tank, 20 is the cleaning water pump, 21 is the first cleaning pipe, 22 is the second cleaning pipe. Specific embodiments

[0018] The present invention is not limited by the following embodiments, and the specific implementation manners can be determined according to the technical solution of the present invention and the actual situation.

[0019] In the present invention, for the convenience of description, the description of the relative position relationship of each component is carried out according to the layout mode of the attached drawings of the specification. For example, the position relationships such as front, rear, upper, lower, left, and right are determined according to the layout direction of the attached drawings of the specification. Figure 1 The following describes the present invention in further detail with reference to the embodiments and the attached drawings:

[0020] The following describes the present invention in further detail with reference to the embodiments and the attached drawings: Embodiment 1: As shown in Attachment Figure 1 、 4 、5, the cuttings washing and fishing system includes a sand fishing mechanism, a sand guiding pipe 7 and a sand cleaning mechanism. The sand cleaning mechanism includes a frame 1, a turntable 2, a sand receiving hopper 3 and a driving mechanism 4. The turntable 2 is rotatably installed on the upper part of the frame 1. A plurality of vertically penetrating mounting holes are evenly distributed at intervals along the circumference at the upper end of the turntable 2. Each mounting hole is sleeved with a sand receiving hopper 3. The sand receiving hopper 3 is in the shape of a cylinder with an open upper part and a closed lower part. A limiting step 5 is arranged on the outer side of the upper part of the sand receiving hopper 3 corresponding to the upper end of the turntable 2. A plurality of water filtering holes 6 are distributed at intervals on the outer side of the lower part of the sand receiving hopper 3 corresponding to the lower part of the turntable 2. A driving mechanism 4 capable of rotating the turntable 2 is arranged in the middle of the frame 1. A sand guiding pipe 7 is arranged above the frame 1. The left end of the sand guiding pipe 7 is located above one of the sand receiving hoppers 3. The right end of the sand guiding pipe 7 is fixedly communicated with the sand outlet 9 of the sand fishing mechanism capable of conveying the cuttings sample into the sand guiding pipe 7. A flushing mechanism capable of flushing the cuttings sample in the sand receiving hopper 3 is arranged on the right side of the frame 1.

[0021] According to requirements, the driving mechanism 4 is a well-known electric indexing table in the prior art, which facilitates adding cuttings samples into each sand receiving hopper 3, rinsing the cuttings samples in each sand receiving hopper 3, and obtaining information after taking out the sand receiving hopper 3 with the cuttings samples cleaned. During use, a limiting step 5 is provided on the outer side of the upper part of the sand receiving hopper 3 corresponding to the upper end position of the turntable 2, so that the sand receiving hopper 3 can be seated in the mounting hole, facilitating the access and placement of the sand receiving hopper. By setting up the sand fishing mechanism, the cuttings samples enter the sand fishing mechanism after passing through the drilling shaker, which can reduce the working intensity of the operator for obtaining cuttings samples. The cuttings samples enter the sand receiving hopper 3 through the sand fishing mechanism, the driving mechanism 4 drives the sand receiving hopper 3 to rotate, and at the same time, the impact mechanism rinses the cuttings samples in the sand receiving hopper 3 clean, facilitating the subsequent acquisition of cuttings sample information, enabling the continuous sampling work of cuttings samples, and meeting the technological requirements of drilling and logging.

[0022] According to actual needs, the above cuttings fishing and rinsing system can be further optimized and / or improved as follows: Embodiment 2: As an optimization of the above embodiment, as shown in Figure 1 、 2 、Figure 3, the sand fishing mechanism includes a screw conveyor 8 and a feed chute 10. The sand outlet 9 is arranged on the lower right side of the screw conveyor 8. The feed chute 10 is fixedly installed on the upper side of the screw conveyor 8, and the cross-section of the feed chute 10 is a trapezoid with a narrow upper part and a wide lower part. According to requirements, the motor of the screw conveyor 8 is a well-known explosion-proof variable-frequency motor in the prior art. During use, through such a setting, the conveying efficiency of the cuttings samples can be improved, the operation intensity of the operator can be reduced, and the motor speed of the screw conveyor 8 can be controlled to obtain a certain amount of cuttings samples.

[0023] Embodiment 3: As an optimization of the above embodiment, as shown in Figure 1 、 4 Figure, the left end of the sand guiding pipe 7 is inclined downward relative to the right end. The left end of the sand guiding pipe 7 is bent downward and fixedly connected to a funnel-shaped connector 11 with a large upper part and a small lower part. The right end of the sand guiding pipe 7 is bent upward and fixedly connected to a connecting pipe 12, and the upper end of the connecting pipe 12 is fixedly connected to the sand outlet 9. During use, through such a setting, the cuttings samples conveyed by the sand fishing mechanism into the sand outlet can quickly enter the sand receiving hopper 3 through the sand guiding pipe 7, and the blockage of the cuttings samples at the sand outlet 9 can be avoided.

[0024] Embodiment 4: As an optimization of the above embodiment, as shown in Figure 1 、 4As shown in the figure, a circulating water tank 13 is fixedly installed on the lower left side of the frame 1. A circulating water pump 14 is fixedly installed inside the circulating water tank 13. A first circulating water pipe 15 is fixedly connected between the outlet of the circulating water pump 14 and the connecting pipe 12. During use, with such a setting, the inlet of the circulating water pump 14 can suck the water in the circulating water tank 13 and then transport it into the first circulating pipe 15, which can dilute and clean the cuttings sample in the sand guiding pipe 7, improve the fluidity of the cuttings sample in the sand guiding pipe 7, and avoid the blockage of the cuttings sample in the sand guiding pipe 7.

[0025] Embodiment 5: As an optimization of the above embodiment, as shown in the appendix Figure 1 、 4 As shown in the figure, an upward-opening circular water collecting box 16 is fixedly installed on the inner side of the upper part of the frame 1 corresponding to the lower part of the sand receiving hopper 3. A second circulating water pipe 17 is fixedly connected between the lower side of the water collecting box 16 and the upper part of the circulating water tank 13. During use, with such a setting, the water in the cuttings sample flowing into the sand receiving hopper 3 can flow into the water collecting box 16 through the water filtering holes 6, and then flow into the circulating water tank 13 through the second circulating water pipe 17. The water in the circulating water tank 13 is then pumped by the circulating water pump 14 through the first circulating water pipe 15 to the connecting pipe 12 to continue diluting and cleaning the cuttings sample. In this way, the water source can be recycled, saving and reducing the cleaning cost of the cuttings sample.

[0026] Embodiment 6: As an optimization of the above embodiment, as shown in the appendix Figure 1 、 4 As shown in the figure, the flushing mechanism includes a cleaning spray head 18, a cleaning water tank 19 and a cleaning water pump 20. A cleaning spray head 18 is provided on the upper side of the sand receiving hopper 3 corresponding to the front position of the left end of the sand guiding pipe 7. A cleaning water tank 19 is fixedly installed on the upper right side of the frame 1. A cleaning water pump 20 is fixedly installed on the lower part of the frame 1 corresponding to the lower position of the driving mechanism 4. A first cleaning pipe 21 is fixedly connected between the inlet of the cleaning water pump 20 and the lower part of the cleaning water tank 19. A second cleaning pipe 22 is fixedly connected between the outlet of the cleaning water pump 20 and the upper end of the cleaning spray head 18. During use, with such a setting, the cuttings sample in the sand receiving hopper 3 can be flushed, which can improve the sampling efficiency of the cuttings sample, avoid the omission of formation information, and meet the technological requirements of drilling and logging.

[0027] The above technical features constitute the embodiments of the present invention, which have strong adaptability and implementation effects. Non-essential technical features can be added or reduced according to actual needs to meet the requirements of different situations.

Claims

1. A rock debris washing system, characterized in that The sand cleaning mechanism comprises a sand bailing mechanism, a sand guide pipe and a sand cleaning mechanism. The sand cleaning mechanism comprises a frame, a turntable, a sand receiving bucket and a driving mechanism. A turntable is rotatably installed on the upper part of the frame. A plurality of mounting holes are evenly distributed along the circumference at the upper end of the turntable and are connected up and down. A sand receiving bucket is installed in each mounting hole. The sand receiving bucket is in the shape of a cylinder with an open upper part and a closed lower part. A limiting step is provided on the outer side of the upper part of the sand receiving bucket corresponding to the upper end of the turntable, and a plurality of water filtering holes are distributed at intervals on the outer side of the lower part of the sand receiving bucket corresponding to the lower part of the turntable. A driving mechanism capable of rotating the turntable is provided in the middle part of the frame. A sand guide pipe is provided above the frame. The left end of the sand guide pipe is located above one of the sand receiving buckets. The right end of the sand guide pipe is fixedly connected to the sand outlet of the sand bailing mechanism capable of transporting rock cuttings samples into the sand guide pipe. A flushing mechanism capable of flushing rock cuttings samples in the sand receiving bucket is provided on the right side of the frame.

2. The rock debris washing system according to claim 1, characterized in that The sand bailing mechanism comprises an auger conveyor and a feed trough. The sand outlet is arranged on the lower right side of the auger conveyor. The feed trough is fixedly installed on the upper side of the auger conveyor. The cross section of the feed trough is a trapezoidal shape that is narrow at the top and wide at the bottom.

3. The rock debris washing system according to claim 2, characterized in that The left end of the sand guide pipe is tilted downward relative to the right end. The left end of the sand guide pipe is bent downward and fixedly connected with a funnel-shaped connector with a larger upper part and a smaller lower part. The right end of the sand guide pipe is bent upward and fixedly connected with a connecting pipe. The upper end of the connecting pipe is fixedly connected with the sand outlet.

4. The rock debris washing system according to claim 3 is characterized in that A circulating water tank is fixedly installed on the left side of the lower part of the frame, a circulating water pump is fixedly installed inside the circulating water tank, and a first circulating water pipe is fixedly connected between the outlet of the circulating water pump and the connecting pipe.

5. The rock debris washing system according to claim 4, characterized in that A circular water collecting box with an upward opening is fixedly installed on the inner side of the upper part of the frame corresponding to the lower part of the sand hopper, and a second circulating water pipe is fixedly connected between the lower side of the water collecting box and the upper part of the circulating water tank.

6. The rock debris washing system according to claim 1, 2, 3, 4 or 5, characterized in that The flushing mechanism includes a cleaning nozzle, a cleaning water tank and a cleaning water pump. A cleaning nozzle is provided on the upper side of the sand receiving hopper in front of the left end of the sand guide pipe, a cleaning water tank is fixedly installed on the right side of the upper part of the frame, and a cleaning water pump is fixedly installed on the lower part of the frame corresponding to the position below the driving mechanism. A first cleaning pipe is fixedly connected between the inlet of the cleaning water pump and the lower part of the cleaning water tank, and a second cleaning pipe is fixedly connected between the outlet of the cleaning water pump and the upper end of the cleaning nozzle.

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