15results about How to "Improve the righting effect" patented technology

The invention provides an elastic centralizer which comprises a first connecting cylinder, a second connecting cylinder and a plurality of centralizing ribs, the top ends of the centralizing ribs are connected with the first connecting cylinder, the bottom ends of the centralizing ribs are connected with the second connecting cylinder, the first connecting cylinder and the second connecting cylinder are arranged on the outer wall of a sleeve in a sleeving mode, and the centralizing ribs are made of fiber resin composite materials. And the sleeve extends in an arc form in the direction far away from the sleeve. According to the elastic centralizer, the contact area of the centralizing ribs and the well wall is in a proper range, large supporting force can be provided, stress is not concentrated, meanwhile, the centralizing ribs have good elastic reset capacity, when the centralizing ribs are subjected to local pressure, the centralizing ribs are not prone to plastic deformation, and therefore centering running of a casing cannot be affected.

The present invention discloses a directional horizontal hole advance exploration coal mine fault coring device and a method for preventing core slippage, comprising an outer cylinder and an inner cylinder coaxially arranged in the outer cylinder, a coring drill bit coaxially installed on the front end of the outer cylinder, a core claw assembly coaxially installed on the front end of the inner cylinder, the core claw assembly is located in the coring drill bit, and the distance from the front end face of the core claw assembly to the inner shoulder surface of the coring drill bit is greater than zero; a roller bearing is installed between the core claw assembly and the coring drill bit, and a rotating assembly component is coaxially installed in the rear end of the outer cylinder. The present invention can ensure high core integrity, not easy to break, and high core success rate during horizontal coring; by setting the front end of the core claw seat as a conical hole, the outer wall of the core can be squeezed and strengthened to ensure the integrity of the coring and avoid the core from spreading, and the friction between the core claw seat and the core can be increased when pulling the drill.

The present invention discloses a highly adaptable inclined electric pole straightening device, comprising a movable base, a first straightening component movably installed inside the movable base, a second straightening component movably installed at one end of the top of the movable base, a fixing kit fixedly connected to one side of the second straightening component, a supporting component is provided at one side inside the movable base, one end of the first straightening component is connected to the supporting component. The above scheme has a simple and convenient overall structure and can be adapted to various different scenarios. Auxiliary hydraulic push rods form triangular supporting frames on both sides of a movable groove and on both sides of one end of the first hydraulic push rod, respectively, to support the first hydraulic push rod, thereby improving the stability of the overall support. The first straightening component and the second straightening component are staggered and coordinated for straightening, thereby improving the supporting capacity and straightening capacity of the overall device. The fixing and separation of the fixing kit and the electric pole are more convenient, and no manual disassembly and assembly are required, thereby improving the efficiency of straightening the electric pole.

The application discloses a hydraulic separation type detachable centralizer for oil sucker rod and relates to the technical field of centralizers, which comprises a fastening concave frame, a mounting mechanism is arranged in the fastening concave frame, and a stabilizing mechanism is arranged on one side of the mounting mechanism; the mounting mechanism comprises a transmission screw rod, a transmission rod is connected to one end of the transmission screw rod, a servo motor is mounted at one end of the transmission rod, a first threaded ring is arranged outside the transmission screw rod, and a first connecting branch plate is connected to one side of the bottom end of the first threaded ring. The mounting mechanism and the stabilizing mechanism are arranged to quickly extrude and centralize the oil sucker rod, the extrusion fixing does not need bolts, labor is saved, the upper and lower parts are installed together, installation efficiency is higher, installation is faster, operation is simple and easy to use, time and labor are saved, practicality is better, the stability of the bottom of the centralizer is effectively improved, stability is maintained, the centralizing effect is better, and the bottom stability is maintained.

The invention belongs to the field of casing running equipment and facilities, and provides a composite bearing type casing centralizer which comprises a pair of hoops and a plurality of elastic fin assemblies, each hoop comprises a sleeve body, a mounting opening, a welding positioning plate, an upper hooping piece and a lower hooping piece, and each elastic fin assembly comprises an end piece, an inner elastic piece and an outer elastic piece. A cantilever plate and an impeller set are arranged on the inner side of the inner elastic piece, the axis of the impeller set faces the side face of the inner elastic piece, the inner elastic piece and the outer elastic piece are each of a double-arch-shaped structure, the arch directions of the inner elastic piece and the outer elastic piece are opposite, and double-row balls and single-row balls are arranged on the sides, back on to the center of the sleeve, of the inner elastic piece and the outer elastic piece correspondingly. The double-row balls are used for supporting the outer elastic piece and reducing the friction force in the direction of the lower sleeve, and the single-row balls are used for reducing the friction force in the direction of the lower sleeve. The centralizer is reasonable in design, good in abrasion resistance and centralizing effect, beneficial to promoting the circulation effect of underground circulation media, capable of promoting the casing running progress through the well environment and suitable for large-scale popularization.

The invention belongs to the technical field of oil field underground yield and injection increasing equipment, and discloses an all-metal soluble ball seat based on bridge shooting combined fracturing construction and a using method of the all-metal soluble ball seat. An upper cone is in a circular truncated cone shape, a sliding cavity is formed in the upper cone along the center axis, a center pull rod is arranged in the sliding cavity, and the outer conical surface of the upper cone is sleeved with a metal sealing ring; a sealing ring is arranged on the outer side face of the metal sealing ring, a slip is arranged outside the small end of the upper cone and on one side of the metal sealing ring in a sleeved mode, a tailstock is arranged at the end, away from the upper cone, of the slip, one end of the center pull rod is in threaded connection with the tailstock, and the other end of the center pull rod is fixedly connected with a pressing cap capable of abutting against the large end face of the upper cone. A centralizing sliding block is arranged on the portion, located in the sliding cavity, of the center pull rod in a sleeved mode, and the centralizing sliding block is in clearance fit with the sliding cavity. The slip centralizing device has the advantages that the slip centralizing effect is good, meanwhile, the number of parts left in a shaft is small, and rapid degradation can be achieved.

The utility model discloses a tree righting frame, which relates to the technical field of tree cultivation and comprises a metal soft belt, a limit sleeve and a locking screw, the limit sleeve is sleeved on the surface of the metal soft belt in a sliding manner, the locking screw is rotatably mounted on the surface of the limit sleeve, a height adjusting mechanism and a limit mechanism are arranged on the metal soft belt, and the height adjusting mechanism and the limit mechanism are arranged on the metal soft belt. By adjusting the size of the binding opening of the metal soft belt, various trees with different diameters can be centralized, the overall use flexibility of the device is improved, the mode that the binding opening of the metal soft belt is adjusted in size and spliced connection is adopted, the mode that a supporting framework is set up through wood sticks is avoided, the wood sticks are limited and fixed through steel wire ropes, and the use safety of the device is improved. The three arc-shaped plates are matched with the corresponding metal flexible sheets, the connecting grooves and the spring pins to be connected, limited and fixed, a circular ring shape can be formed, the stability between the structures is enhanced, and the righting effect can be improved.

The application discloses a horizontal well coiled tubing rotary jet oscillation blockage removing device and method, which comprises a high-pressure jet head, the high-pressure jet head is provided with a high-pressure water jet hole and is a hydraulic rotary jet head; the high-pressure water jet hole of the high-pressure jet head generates a rotating force when high-pressure water passes through; the device further comprises a rotating pipe, a centrifugal force variable-diameter blocking mechanism and a centrifugal force variable-diameter centralizing mechanism; the front end of the high-pressure jet head is connected with the tail end of the rotating pipe and is in communication, the rear end of the high-pressure jet head is connected with the central channel of the rotating disc of the centrifugal force variable-diameter blocking mechanism and is in communication; the high-pressure jet head drives the rotating pipe and the rotating disc to rotate simultaneously. The application can make the blockage removed by the high-pressure jet head play a blocking effect, prevent the blockage from entering the other side of the first limiting sliding groove to cause secondary blockage, ensure the blockage removing effect, and ensure that the rotating axis of the rotating disc, i.e. the position of the high-pressure jet head, is on the central axis of the horizontal well, so that a good centralizing effect can be achieved on the high-pressure jet head.

The invention relates to the technical field of forestry engineering, and discloses a forestry engineering seedling cultivation righting device, a first mounting plate and a mounting pipe fixedly connected to the first mounting plate, a mounting column and a clamping righting mechanism are slidably connected in the mounting pipe, and the clamping righting mechanism is arranged on the mounting column. According to the forestry engineering seedling cultivation righting device, seedlings are placed in the transmission half rings in the first mounting frame and the second mounting frame, and then when strong wind occurs, the transmission half rings are driven to rotate through the steering mechanism, so that the clamping mechanism rotates to the direction in which the seedlings are subjected to wind power; meanwhile, an air-blowing clamping mechanism is driven by wind power to operate, and an elastic air bag is driven to fix the nursery stock in a flexible wrapping manner, so that the nursery stock is reversely supported in the wind power direction when the nursery stock is subjected to strong wind, stable righting of the nursery stock under the condition of strong wind is greatly improved, and the righting effect on the nursery stock is greatly improved.

The utility model discloses a nursery stock righting device for forest cultivation, which relates to the technical field of nursery stock righting and comprises two transverse plates which are arranged in parallel, two vertical plates which are arranged in parallel are arranged on the two transverse plates, caulking grooves which are matched with the vertical plates are arranged on the transverse plates, first bolts are inserted on the vertical plates, and the vertical plates are in threaded connection with the first bolts. Threaded holes matched with the first bolts are formed in the transverse plate, and the first bolts are used for fixing the transverse plate and the vertical plate. The two vertical plates are supported by the two transverse plates, the transverse plates and the vertical plates are fixed through the first bolts, and the two transverse plates are in large-area contact with the ground, so that under the support of the two transverse plates, the change of the single-point-position terrain of the ground cannot enable the device to deflect in the aspect of angle, and therefore, nursery stocks righting by the device can be effectively supported; the transverse plates and the vertical plates are fixed to the ground through the reinforcing nails, it can be ensured that the position of the device is stable, and therefore the nursery stocks can be better supported and centralized.

The utility model provides a prepressing mechanism, prepressing tooling and prepressing system.The prepressing mechanism is used for pressing a valve on an external carrier and comprises a pressing rod, an abutting block arranged in the pressing rod in a sliding mode and a first elastic piece connected between the abutting block and the pressing rod in an abutting mode; the pressing rod is provided with an inserting cavity with an opening in one end, the abutting block is arranged in the inserting cavity, the end, close to the opening, of the abutting block is provided with an abutting face, the valve can enter the inserting cavity and abut against the abutting face, and under abutting of the abutting face, the valve can be pressed at the preset position of the external carrier through the pressing rod. According to the pre-pressing mechanism, the valve piece can abut against the abutting face of the abutting block after entering the inserting cavity, and under abutting of the abutting face, the valve piece can be pressed at the preset position of the external carrier through the pressing rod, so that the valve piece is prevented from inclining in the press-fitting process, and the press-fitting effect of the valve piece is improved.

The utility model discloses an elastic centralizer for a drill rod, and belongs to the technical field of well cementation tools. The elastic centralizer for the drill rod further comprises a ball rotationally connected to the sliding rod. The inner side wall of each end cover is provided with an internal thread; each internal thread is in threaded connection with a sliding end block; a corrugated pipe is fixedly connected between the two sliding end blocks; by arranging the sliding end block and the corrugated pipe, the sliding end block is in threaded connection with the internal thread, the corrugated pipe can be compressed by rotating the sliding end block, the inner side wall of the corrugated pipe can abut against the sleeve after being compressed, the sleeve can be assisted to be centralized, the end cover can be assisted to be positioned, the centralizing effect is improved, and practicability is improved.

The present invention discloses a composite cyclone hydraulic straightener, comprising a coupling, a center tube, a roller rotary straightener, a straightening sleeve, a hydraulic device, a back-off ring, a hydraulic variable diameter straightener, a conical ring platform, and a lower joint. The right end of the coupling is connected to the left end of the center tube. The roller rotary straightener, the straightening sleeve, the hydraulic device, the back-off ring, the hydraulic variable diameter straightener, and the conical ring platform are sequentially and adjacently sleeved on the center tube. The right end of the center tube is connected to the left end of the lower joint. The roller rotary straightener comprises a ball hole, a cyclone blade, and a ball. The hydraulic device comprises a cylinder, a piston, and a pressure transmission hole. The hydraulic variable diameter straightener comprises a floating seat, a straightening bar, and a fixed seat. The present invention can not only effectively solve the problems of high entry resistance and poor applicability of the existing straightener to irregular wellbore diameters, but also assist in removing residual rock cuttings and dead slurry from the well wall during drilling and cementing operations.

This invention relates to the field of petroleum engineering technology, specifically to a straightening milling and channel-drilling device for wells with localized bending, misalignment, and channel-free casing damage. The device includes a hydraulic ball bearing straightening device, comprising a straightening tube and a piston tube. Multiple spiral straightening strips are protruding from the outer circumference of the straightening tube, each with multiple mounting holes, and each mounting hole houses a ball bearing. The piston tube is coaxially located inside the straightening tube, and its outer circumference has a limiting groove. The piston tube can slide up and down to allow the limiting groove to push the ball bearing out of the mounting hole. The spiral straightening strips are divided into multiple groups, evenly distributed around the circumference of the straightening tube. Each group includes two spiral straightening strips, which are staggered circumferentially and overlap vertically, improving the straightening effect and ensuring the tool does not deviate during casing milling and channel drilling.

The present application discloses a retainer and a bearing. The retainer includes a first ring and a second ring, as well as multiple beams connecting the first ring and the second ring. The multiple beams are spaced apart from each other in a circumferential direction of the retainer and a pocket for accommodating a rolling element of a bearing is defined between adjacent beams. The side surface of the beam in the circumferential direction includes a first pressure slope and a second pressure slope spaced apart from each other, and a recessed surface provided at one or two ends of the pocket of the retainer and extending from the first pressure slope towards a longitudinal centerline of the beam and towards a longitudinal end of the beam. The retainer facilitates bearing assembling, avoids the use of large instruments during the assembling, and reduces damage to various components of the bearing during the assembling.