52results about How to "Extension of Advanced Standing Period" patented technology

The invention relates to an intelligent synchronous testing and adjusting method capable of simultaneously infusing, testing and regulating, belonging to the field of oil extraction technologies in oil fields. A method of adopted equipment comprises the following steps: (1) a synchronous intelligent testing and adjusting device release part; (2) an intelligent testing and adjusting part; (3) a guiding part; and (4) an eccentric water distribution part. The adopted equipment is characterized in that the intelligent synchronous testing and adjusting method of the whole equipment comprises the following steps: descending into a well: using a steel wire to be suspended to descend into the well; placing the synchronous intelligent testing and adjusting device into a connected technological pipecolumn provided with an eccentric water distributor and a packer; and leading the adjustable blanking plug into an eccentric hole of the eccentric water distributor and releasing the adjustable blanking plug so that the adjustable blanking plug stays in the eccentric water distributor. The invention can realize the unchanged bridge type eccentric whole well working system, directly obtain the single-layer flow, achieve the simultaneous water infusion, testing and adjustment at multiple layers and enhance the work efficiency.

The invention relates to a novel carbon fiber sucker rod and a manufacturing method thereof. The sucker rod in the invention consists of a rod body and rod joints, wherein the rod body is prepared from carbon fiber composite, the both ends of the rod body are connected with the rod joints; the rod joints are prepared from carbon fiber composite; and the rod joints are machined on the rod body directly and integrated with the rod body. The sucker rod is prepared from the main raw materials comprising T300 carbon fiber-12K, epoxy resin, Me-THPA, accelerator and release agent through the pultrusion technology. According to the invention, as the sucker rod is corrosion-resistant, is difficult to break and has light weight, the time of downhole operations in a pumped well is reduced, the maintenance-free period is prolonged, and the downhole operation cost and the material cost for changing the sucker rod are saved. By adopting the carbon fiber composite sucker rod disclosed by the invention, the transportation is convenient, the installation speed is high, the time and the labor are saved and the operation is safe and reliable.

The invention discloses a high-efficient multi-stage cyclone self-cleaning separator and an application method, relates to the sand control technique of oil well pumps and solves the problems in the prior art. The structural relationship of the separator lies in that an upper connector is connected to the upper end of an outer tube, and a lower connector is connected to the lower end of the outer tube; an inner tube is arranged in the middle of the outer tube; spring supports are respectively fixed on the periphery of the inner tube; big ends of springs are fixed on the spring supports; small ends of the springs are fixed on upper fixed rings, slip rings are arranged on the periphery of the inner tube, filter screens are arranged at the outer ends of the springs, the upper ends of the filter screens are fixed on the peripheries of the slip rings by filter screen small hoop rings, and the lower ends of the filter screens are fixed on the peripheries of the spring supports by filter screen large hoop rings.

The invention is an ultra-long stroke oil pumping machine, comprising supporting seat, balance weight dragging piece, flexible oil pumping rod dragging piece, reducing power-driven roller, shaft coupler, electric motor, intelligent control cabinet, base, foundation, braking system, swelling wheel, swelling wheel stand, balance weight shaft, and balance weight, and characterized in that two ends of the power driven roller are supported by the supporting seat and connected with the electric motor on the base through the shaft coupler, one end of the flexible oil pumping rod dragging piece is fixedly wound in the middle of the power-driven roller body and the other end is connected with an oil pump through a continuous oil pumping rod in the oil pumping well, the balance weight dragging piece is composed of two steel wire ropes and nonmetallic rope, one end of each of them is fixedly wound at one end of the reducing power-driven roller body, and the other end is connected with the balance weight placed in an underground balance weight shaft, the swelling wheel is installed on the front-side base by the swelling wheel stand, it can make the flexible oil pumping rod aligned with the well mouth by adjusting the swelling wheel stand, the braking system and the intelligent control cabinet are installed on the base and the base is installed on the foundation.

The invention discloses an anti-blocking screen pipe string integrating oil production and sand washing, which includes a collar, a screen pipe and a sand washing pipe. The top end of the screen pipe is connected with the collar, and the bottom end of the screen pipe passes through an inner blind plate Connected and set inside the sand washing pipe, the bottom blind plate of the screen pipe is fixed on the sand washing pipe through shear pins, and an axial sliding mechanism is connected between the two, and an inner screen is provided at the lower end of the screen pipe The sand washing hole is equipped with a locking device at the upper end of the sand washing pipe, and an outer sand washing hole is provided at the lower end, and the pipe column is properly pressurized. After the shear pin is cut off, the two are relatively opposite through an axial sliding mechanism. Sliding, the locking device of the sand washing pipe is connected with the coupling, and the two are locked, and the inner sand washing hole and the outer sand washing hole are connected correspondingly. The invention has one tube with two functions, which combines the functions of the screen tube and the sand washing tube into one, and has the advantages of liquid inflow and flow prevention, and can resume normal production progress in time even when the screen is blocked or stuck. The liquid function can finally prolong the repair-free period of the oil well and further improve the operation efficiency.

The invention discloses an efficient elastic filter screen vibration separation device and an application method, and relates to a sand prevention technology for an oil well pump. The efficient elastic filter screen vibration separation device and the application method solve the problems in the prior art. The efficient elastic filter screen vibration separation device is structurally characterized in that an upper joint and a lower joint are arranged at the two ends of an outer pipe separately, an inner pipe is located in the middle of the outer pipe, the lower end of the inner pipe is connected to a conical vibrating spring, the outer edge of the inner pipe is sleeved with a conical sand-proof filter screen, the lower end of a centralizing vibrating spring is connected to the inner pipe,the upper end of the centralizing vibrating spring is connected to a corrugated pipe, the upper end of the corrugated pipe is connected to the upper joint, the conical sand-proof filter screen is conical, the conical caliber of the upper part is large, the conical caliber of the lower part is small, the taper is 10 degrees, the bore diameter of the conical sand-proof filter screen is 180 meshes,the top end of the conical sand-proof filter screen is connected to the upper end of the inner pipe, a gap between the outer wall of the top end of the conical sand-proof filter screen and the inner wall of the outer pipe is 5 mm, and the bottom end of the conical sand-proof filter screen is connected to the lower end of the inner pipe.

The invention discloses a downhole gas slow-release device which comprises a shell. An inlet and an outlet are formed in the shell, a baffle is arranged at the inlet and mounted on the inner wall of the inlet through hinges, and the baffle is matched with the inlet. The situations that the oil well sleeve pressure is excessively high, consequently the dynamic liquid surface is dropped, the pump efficiency is lowered, and oil well production is abnormal are eliminated, dynamic control over the oil well sleeve pressure is achieved, and normal production of an oil well is guaranteed. The situation that sleeve gas is manually released, consequently drop of the downhole flow pressure is excessively fast, the formation instantaneous production pressure difference is excessively large, an oil well sand prevention process is damaged, and consequently the well lying phenomenon is caused by formation excited sand discharging are avoided, the oil well exemption period is prolonged, and the crudeoil yield is increased.

The invention relates to a passive type multifunctional well head backflow dredging compensating device for petroleum industry, mainly comprising a separating backflow assembly and a medicament carrying unit, wherein the separating backflow assembly mainly comprises a well fluid separating unit, a filter, a sand and water storage chamber and a backflow flow rate control unit; the medicament carrying unit mainly comprises a medicament carrier, a medicament can and an air balancing connection pipe, wherein the medicament carrier is respectively communicated with a fluid returning pipe and the medicament can; and after well fluid is separated and filtered by the separating backflow assembly, a part of polluted water enters the medicament carrier through a well fluid backflow pipe column along the fluid returning pipe and is mixed with medicament inside the medicament can by a water power spray principle to flow back to a passage dredging submergence depth air in an oil sleeve ring in the air. The invention reduces the resisting force of the air which upwards flows from submergence depth, prevents the air reversely entering an electric pump, ensures the separating effect of an electric pump separator, prolongs the exemption period of an electric pump well and saves a great amount of operation expense and operation time.

The invention discloses a method for evaluating the construction effect of remedial operation in underground workover operation. The method comprises the steps that (a) an evaluating index set U of the remedial operation is determined; an evaluating set V of the operation effect is determined; the weight W of each evaluating index is determined; evaluation matrixes R and Ri are given, wherein R= (R1, R2, R3, R4, R5, R6T), and Ri= (ri1, ri2, ri3, ri4, ri5); a fuzzy evaluation model is established; an evaluating index value B is calculated and normalized; and according to a maximum subordinationprinciple, a comprehensive evaluation result is obtained. The purpose of the invention is to provide a method for evaluating the construction effect of the remedial operation in the underground workover operation to overcome the above defects of an evaluation method of the remedial underground operation in the prior art, improve the workover operation quality, prolong the maintenance-free periodof an oil-water well, timely know and grasp the workover operation effect and influencing factors, improve the quality of the remedial operation, thereby achieving the purpose of trying to avoid unnecessary overhaul and complex operation.

The invention relates to liquid charge pumps, in particular to an energy consumption-free liquid charge pump for a jack well. The liquid charge pump is formed by a pump body, a plunger, a liquid inlet and a liquid outlet; the liquid inlet is formed in one side of the lower part of the pump body, and the liquid outlet is formed in the other side of the pump body; one end of the plunger is arranged in the inner cavity of the pump body; the upper part of the inner cavity is fixed by a gland of which the packing is connected to the top of the pump body by a screw port; a platen is fixed at the upper part of the other end of the plunger; a spring is arranged between an annular boss at the upper part of the pump body and the platen; the upper screw port of the liquid inlet is connected with a liquid inlet check valve body, and the screw port of the liquid outlet is connected with a liquid outlet check valve body; the top of the plunger is slidably connected with a walking beam in the jack well. The liquid charge pump is powered and connected by the vertical reciprocation of the walking beam on a pumping unit, certain electric-driven supporting facilities are saved, and the energy consumption-free liquid charge pump has the characteristics that the size is small, the weight is light, the structure is simple, the flow is precisely adjusted by the rest energy of the pumping unit without consuming electric energy in the operation process, the cost is low and the like.

The invention discloses a method for controlling the corrosion of an acidic produced liquid of an oil field and belongs to the technical field of oil field sludge treatment and corrosion control. Themethod specifically comprises the following steps: analyzing the water quality of the produced liquid; screening the produced liquid; screening desulfurization and corrosion inhibition functional bacteria; determining a modifier; determining a dirt dispersion agent; determining an on-site implementation process; and carrying out on-site implementation and effect evaluation. By combining a biological desulfurization process with a modified process, the corrosion rate of the produced liquid is reduced effectively and the maintenance free period of the oil field is prolonged effectively. The corrosion rate of the produced liquid reaches over 80%, and the maintenance free period of the oil field is prolonged by over 50%. Moreover, the method has the characteristics of being simple in implementation process, high in pertinence and operability and good in on-site test effect, so that the method can be widely applied to treatment of the acidic produced liquid of the oil field.

The invention discloses an anti-clamping oil well pump. The anti-clamping oil well pump comprises an oil pipe, a correcting joint hoop, correcting bodies, a pump barrel, an outer desilting pipe, a casing pipe, an oil rod, a piston, a pump seat and the like. The oil pipe is arranged in the casing pipe. The lower end of the oil pipe is connected with the outer desilting pipe trough the correcting joint hoop. The correcting bodies are arranged in the correcting joint hoop. The lower end of the correcting joint hoop is connected with the upper portion of the pump barrel through the connecting bodies and a fixing ring. The lower end of the pump barrel and the lower end of the outer desilting pipe are connected with a double-wire joint. An inner thread of the lower end of the double-wire joint is connected with the pump seat. The piston and the oil rod are arranged in the pump barrel. The lower end of the outer desilting pipe is connected with an outer thread of the double-wire joint. The pump barrel is connected with an inner thread of the double-wire joint. A piston cap is arranged on the oil rod. The anti-clamping oil well pump has the beneficial effects that scrap iron and sediment are guided into an annular space between the pump barrel and the outer desilting pipe through the piston cap, the normal work of the oil well pump can be guaranteed, the scrap iron and sediment can be collected effectively, the stuck pump fault is avoided, and the service life of the oil well pump is prolonged.

The invention discloses a borehole fluid lifting device and method. Two tubular column inlet channels are arranged for stratum output liquid, one channel is that when a lower bag shrinks, borehole fluid enters a production tubular column through a lower tubular column liquid inlet valve; when the lower bag is increased, the borehole fluid enters an airtight annular space formed by closely connecting an upper short section, an upper tubular column liquid inlet valve and the lower tubular column liquid inlet valve through a lower liquid discharging valve, and then the borehole fluid enters the tubular column through a tubular column liquid inlet. The other channel is that when an upper bag shrinks, the borehole fluid enters the upper tubular column liquid inlet valve, and then enters an upper bag short section along an upper tubular liquid inlet channel; and when the upper bag is increased, output liquid is squeezed to the upper tubular column by an upper liquid discharging valve. The borehole fluid is only in touch with the outer surface of a bag, the exterior of a motor, the exterior of a gear pump and the like during application, cannot enter important movement parts such as the gear pump, and thus the influence of oil well corrosion and sand production on liquid yield equipment is thoroughly avoided.

The invention relates to a pumping well anti-eccentric device based on a ball face abrasion-proof body. During a site using process of a sucker rod anti-eccentric device, anti-eccentric effect is not obvious, and accordingly a sucker rod and an oil pipe are damaged and fall off. The pumping well anti-eccentric device is provided with a center rod. The cylindrical abrasion-proof body is arranged on the center rod in a sleeved mode. A plurality of sphere grooves are evenly formed in the outer wall of the abrasion-proof body. Sphere balls are embedded into the sphere grooves. Small part ball crowns of the balls are placed out of the sphere grooves. Upper limiting rings and lower limiting rings which are fixed on the center rod are arranged on the center rod and on the upper side and the lower side of the abrasion-proof body. Gaps exist between the upper limiting rings, the lower limiting rings and the abrasion-proof body. The pumping well anti-eccentric device based on a ball face abrasion-proof body is long in wear-resistant time, direct contact of the sucker rod and the oil pipe is avoided, so that abrasion is avoided, the service life of the sucker rod and the oil pipe is prolonged, and oil well normal production is kept.

The invention relates to a pumping well anti-eccentric wear device with a spherical wearproof body. In the field use process of a pumping rod anti-eccentric wear device, the anti-eccentric wear effect is not obvious, and a pumping rod and an oil pipe are prone to being damaged and broken off. The device is provided with a center rod, and the center rod is sleeved with the spherical wearproof body; an upper limiting ring and a lower limiting ring which are fixed on the center rod are arranged at the upper side and the lower side of the wearproof body on the center rod respectively, and gaps exist between the upper limiting ring and the wearproof body and between the lower limiting ring and the wearproof body. The pumping well anti-eccentric wear device with the spherical wearproof body is long in wearproof time, and capable of preventing the pumping rod and the oil pipe from directly making contact to generate wear, prolonging the service life of the pumping rod and the oil pipe and maintaining the normal production of a pumping well.