6results about How to "Improve the righting effect" patented technology

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 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 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 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 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.

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.