40results about How to "Improve job success rate" patented technology

The invention discloses a vortex sand washing device which comprises an upper connector, a tubing pup joint, a conversion body, a sand washing core tube, a revolving body and a sand washing head, wherein the upper connector is connected with the tubing pup joint, the conversion body, the sand washing core tube, the revolving body and the sand washing head in sequence; an annulus is formed betweenthe upper part of the inner pup joint of the conversion body and the cavity of the tubing pup joint; the lower end of the inner pup joint of the conversion body is provided with a stopper; a flow channel is arranged axially between the inner pup joint and the outer pup joint of the conversion body; the revolving body is arranged outside the sand washing core pipe and the sand washing head; and a bearing hoop is arranged between the lower cavity of the revolving body and the sand washing head. The vortex sand washing device adopts a double-tube structure, thus providing different channels for washing and upward-returning of sand washing fluid, and is characterized by high adaptability, high sand washing efficiency, high sand washing and well cleaning speed, good effect, high operation success rate and the like, thus being adapted to sand washing operation of common oil gas wells, especially to sand washing operation of highly-deviated wells and horizontal wells.

The invention discloses a double filtering-layer meandering circumferential weld self-cleaning sieve tube which is composed of a filter element and a basal tube; the filter element is embedded in a stepped hole at the side wall of the basal tube and is composed of a central cap, a plurality of filtering rings, a fixed ring and a protective cover. The size of the inner diameter of the filtering rings are increased one by one and the inner wall of each filtering ring is a double-stair shape, the outer wall of each filtering ring is an inverted double-stair shape. The outer wall of the central cap is an inverted double-stair shape and the central cap are sheathed in the filtering ring with the smallest inner diameter; all the filtering rings are axially sheathed together according to the size order of the inner diameter. The inner wall of the fixed ring is a double-stair shape and the filtering ring with the largest inner diameter is sheathed in the fixed ring; the outer wall of the fixed ring is an inverted double-stair shape and the upper part of the fixed ring is a conical surface and the lower part thereof is a cylindrical surface. The protective cover is covered on the conical surface of the outer wall of the fixed ring, a plurality of air vent windows are opened on the top surface of the protective cover. The double filtering-layer meandering circumferential weld self-cleaning sieve tube can filter the thin-fine sand, the permeability is high, the filter precision is high, and the filtering seam has extremely strong damage-resistance capacity and is not easily to block.

The invention discloses an AUV underwater retracting system, and relates to the technical field of AUV. The AUV underwater retracting system pulls a capturing taper sleeve through a pulling mechanism,the negative pressure suction formed in an inner cavity of the capturing taper sleeve is converted into a dragging force applied on the AUV to be retracted by using pumping of a pump, and thus safe,reliable, rapid and hidden underwater retracting of the AUV is realized.

The invention provides a converter sublance centering device. The converter sublance centering device comprises a conical centering cylinder, supporting frames, hoisting steel ropes, centering adjusting bolts A, centering adjusting bolts B, a fixing frame, a fine adjustment frame, a balancing weight and a base. One end of each hoisting steel rope is connected with a balancing weight cylinder, and the other end of each hoisting steel rope is connected with the corresponding centering adjusting bolt B. The centering adjusting bolts B are in screw joint with the supporting frames. The balancing weight is fixedly arranged at the lower end of the balancing weight cylinder, the fixing frame is fixedly arranged at the upper end of the balancing weight cylinder, and the fine adjustment frame is fixedly arranged on the periphery of the conical centering cylinder. Bolt holes are formed in the fixing frame, long bolt holes are formed in the fine adjustment frame, the fine adjustment frame is in lap joint to the fixing frame, and the fine adjustment frame and the fixing frame are connected through the centering adjusting bolts A. The base is arranged above the position where a probe is inserted into a mechanical hand, and the supporting frames are fixedly arranged on the base. The converter sublance centering device is simple in technical scheme and easy to implement, adjust and control, can guarantee the construction quality of sublance centering adjustment, can also improve the production efficiency, saves the production cost and guarantees stable operation of production.

The invention provides a hard rod with cable capture and connection device for underwater robots, which belongs to the field of underwater operation robot devices, and realizes the capture of the target hard rod with cables on the upper part of the water twice in a row, and realizes A device attached to a hard rod on the target. The device includes a linkage rotary mechanism, a locking docking mechanism, a differential mechanism, and auxiliary mechanisms such as brackets, limit cylinders, and stepping motors. The linkage rotation mechanism includes guide arms, pressing arms, and cam push rods. The device can guide and capture the target hard rod in a large range through the linkage slewing mechanism, realize the connection of the target hard rod through the locking and docking mechanism, and realize the sequential movement of the linkage slewing mechanism under a single driving source through the differential mechanism. The device can effectively capture the underwater target hard rod within the opening angle range of 112° in front of the robot, and complete the locking and connecting actions of the target hard rod. The device has the advantages of simple structure, large capture range, wide adaptability to environment, high reliability and the like.

The invention discloses a dual-platform hydraulic lifting casing device, which belongs to the technical field of operation equipment and includes a base platform, an upper lifting platform, a lifting hydraulic system, and a lifting cylinder arranged between the base platform and the upper lifting platform , an upstanding main frame column is fixed above the base platform, and a fixed beam is connected to the top of the adjacent main frame column; a lifting cylinder is connected and fixed on the base platform and inside the main frame column, and the lifting cylinder The hydraulic cylinder push rod is connected to the bottom of the upper lifting platform, and the double wellhead platform is adopted, which occupies a small space and is suitable for offshore operation environment; the hydraulic system is used to drive the hydraulic cylinder to lift the top platform instead of the driving system of the drilling and repairing machine, and the equipment setting is convenient and effective. The construction procedure is simplified, the operation success rate is improved, the deficiencies of the existing technology are effectively made up, and the needs of the actual situation are met.

The invention relates to an integrated efficient windowing sidetrack drilling tool comprising a milling taper (1), a high-pressure pipe (2) and a protecting cylinder (3). A fixed plate (15) is arranged in the position, attached to the taper head of the milling taper (1), of the protecting cylinder (3); a high-pressure pipe nipple (16) is arranged between the upper end of the high-pressure pipe andthe milling taper, and the middle of the high-pressure pipe nipple (16) is welded to the fixed plate (15); a plurality of first backpitch grooves are formed in the outer wall of a crown part (17) atthe lower end of the milling taper, and a plurality of first cutting edges (18) are welded between the first backpitch grooves; and a plurality of second backpitch grooves (19) are formed in the positions, above the milling taper crown part (17), of the tapered face and the cylindrical face of the milling taper correspondingly, and a plurality of second cutting edges (20) are welded between the second backpitch grooves. The integrated efficient windowing sidetrack drilling tool is reliable in using performance, the operation success rate is high, and the phenomenon that tapered iron is damagedand fractured is avoided; the windowing speed is high, and the window shape is regular, so that a dead step is not formed, the windowing success rate is high, and the overall efficiency is high; andthe construction period can be shortened, and the drilling cost can be reduced.

The invention provides a structure of chip bearing discs. The structure is used for containing a plurality of chips. The chip bearing discs are provided with a plurality of inversed alignment pieces, the inversed alignment pieces of the chip bearing disc containing the multiple chips are matched with the inversed alignment pieces of the chip bearing disc without the chips, and the chip bearing disc containing the multiple chips can be overturned to be inversely arranged on the other chip bearing disc so that the chips can be overturned to be really inversely arranged into the other chip bearing disc; in addition, the chip bearing discs are further provided with a plurality of stacking alignment pieces, the stacking alignment pieces are arranged on the chip bearing discs in an asymmetric mode to assist in stacked alignment of the multiple bearing discs, and the stacking direction of the stacked bearing discs is limited.

The invention belongs to oil and gas well stimulation technology, and is a drop-in high-energy gas fracturing device. It includes an ignition device and a fracturing bomb connected to the ignition device. The ignition device includes a firing pin piston installed in the barrel and an excitation device for the firing pin. The firing pin piston is connected to the barrel through a radial fixing pin. The detonator of the fracturing bomb Or the primer is located at the bottom of the aforementioned barrel and corresponds to the firing pin; the special feature of the present invention is that the triggering device of the firing pin includes a pilot valve controlled by a spring, the inlet of the pilot valve communicates with the outside world, and a connection The first port of the pipe is located at the outlet of the pilot valve, and the second port of the connecting pipe communicates with the airtight cavity at the tail end of the striker piston. The invention uses a spring to control the opening of the pilot valve, and then leads the wellbore fluid to the striker piston, which not only has fast response, high control precision, but also reliable operation and high operation success rate.

The invention discloses a real-time monitoring system of down-hole tension of a single-core cable used for perforating and a monitoring method thereof. The monitoring system comprises surface equipment and down-hole equipment, the surface portion comprises a display screen and a control panel, the display screen is connected with the control panel, the down-hole portion comprises a down-hole instrument string formed by sequentially connecting a locating sub, a tension sub and an explosion-proof isolation sub, the explosion-proof isolation sub is connected with a perforating gun, the control panel is connected with the locating sub, the tension sub and the explosion-proof isolation sub through the single-core cable separately, and control circuits of the locating sub, the tension sub and the explosion-proof isolation sub are connected with in parallel. By means of the system and the method, tension change of the down-hole cable is measured in real time, and tension signals are uploadedto the ground for display through the single-core cable, so that visual guidance is provided for cable tube column pumping operation of a horizontal well section, and a basis is provided for judging the stress state of a down-hole tube string.