CN219012481U

CN219012481U - Hydraulic pressure leads oblique ware convenient to wireless logging instrument is directional

Info

Publication number: CN219012481U
Application number: CN202320163530.2U
Authority: CN
Inventors: 张欣悦; 张凯峰; 张岚
Original assignee: Jinzhou Qinghua Machinery Co ltd
Current assignee: Jinzhou Qinghua Machinery Co ltd
Priority date: 2023-02-09
Filing date: 2023-02-09
Publication date: 2023-05-12
Anticipated expiration: 2033-02-09

Abstract

The utility model provides a hydraulic pressure leads oblique ware convenient to wireless logging instrument is directional, includes hollow joint, the feeder that connects gradually, leads oblique ware angle iron and sits and seal anchor, is equipped with a locating key along radial on hollow joint, is equipped with the head, characterized by at the lower conical body hole lower extreme of setting anchor: the end socket is provided with a plurality of water holes, wherein the water holes are stepped holes and form annular setting clamping edges at the steps, and the annular setting clamping edges are used for realizing drilling fluid circulation and setting after a plurality of setting balls are put into the annular setting clamping edges; and the other side of the hollow joint corresponding to the positioning key is provided with a ball passing groove along the axial direction of the positioning key, so that the wireless logging instrument is used for positioning and then throwing a setting ball into the inclined guide to realize setting. The beneficial effects are that: the drilling fluid circulating device not only can meet the requirement of circulating drilling fluid when the wireless logging instrument MWD or LWD is adopted as the inclined guide for orientation, but also can meet the setting pressure-holding requirement of the inclined guide after orientation is finished; the operation is reliable, the orientation operation is greatly simplified, the orientation time is shortened, and considerable orientation cost is saved.

Description

Hydraulic pressure leads oblique ware convenient to wireless logging instrument is directional

Technical Field

The utility model belongs to a well repair tool, and particularly relates to a hydraulic inclinometer convenient for orientation of a wireless logging instrument.

Background

The hydraulic inclined guide is a tool for drilling a window in a well, and comprises a joint with a through hole, a feeder connected to an outlet of the joint, an inclined guide iron fixed on the feeder, a cylinder sleeve fixedly connected to the lower end of the inclined guide iron, an upper cone, a lower cone, a transverse slip, a longitudinal slip, a limiting pipe inserted into the upper cone and the lower cone, a hook body connected to the outlet of the feeder and an elbow body inserted into the hook body.

Since most sidewells require orientation, and for sidewells requiring orientation, the whipstock must be fitted with a locating joint on its joint prior to the trip, with the aid of which the orientation of the whipstock ramp within the well is determined by the gyroscope. The positioning joint consists of a joint main body for connecting a drilling tool and an inclined guide, a hollow piston body coaxially nested in the joint main body, a positioning key inserted into the piston body along the radial direction, two groups of sealing rings arranged on the hollow piston body, two fixing bolts vertically distributed on the joint main body and used for fixing the piston body, and a special sleeve for adjusting the angle of the piston body.

When in operation, the positioning joint is connected to the inclined guide and screwed by manpower, the angle of the piston body is adjusted by the special sleeve to enable the positioning key to be opposite to the central line of the inclined surface of the inclined iron of the inclined guide, and then the fixing bolt is screwed to enable the piston body to be fixed in the joint main body so as to fix the positioning key; besides, the hydraulic tongs are used for boosting and screwing the inclined guide and the positioning joint before the inclined guide goes into the well, so that the relative positions of the positioning key and the inclined surface of the inclined guide are changed, and the inclined guide needs to be corrected, thereby not only increasing the operation cost, but also reducing the operation efficiency.

In order to solve the above problems, CN206845096U discloses a self-directional hydraulic solid oblique guide, which comprises a hollow joint, a tubular feeder, an oblique guide oblique iron and a setting anchor device which are connected in sequence, wherein a liquid guide tube which is used for communicating an inner hole of the feeder with an inner cavity of the setting anchor device is arranged in the oblique guide oblique iron, and the self-directional hydraulic solid oblique guide is characterized in that: a positioning key is radially arranged on the joint, protrudes out of the inner wall of the joint and is aligned with the central line of the inclined plane of the inclined iron of the inclined guide; the locating key is matched with a key groove on the gyroscope for determining the inclined plane direction of the inclined iron of the inclined guide. Therefore, the inclinometer can be directly oriented by using the lower gyroscope of the logging truck after the inclinometer is in place, a positioning joint is not needed, the work is reliable, the materials are saved, the operation cost is reduced, and the operation efficiency is improved.

Because the gyroscope is a wired logging, a special cable for logging is needed to be lifted, logging preparation and operation time are longer, a great deal of inconvenience is brought to sidetrack construction, along with technological progress, the wireless logging technology, namely logging while drilling, is perfected day by day, the orientation of the inclinometer is gradually replaced by the wireless logging system, such as MWD and LWD, by using the wired logging system, and the wireless logging system needs to circulate drilling fluid to convey logging parameters to the ground, so the precondition that the orientation of the inclinometer by using the wireless logging system is that the drilling fluid can be circulated.

At present, three types of hydraulic fixed type inclinometers are commonly used at home and abroad: the first is a preset ball inclined guide, which cannot circulate drilling fluid at all, such as the self-directional hydraulic solid inclined guide disclosed in CN206845096U, and cannot be oriented by a wireless logging system because the inclined guide is set once the drilling fluid circulates; the second is that the back-throwing ball-guiding inclinometer can circulate drilling fluid, but a setting ball must be thrown into to block the ball seat so as to realize the pressure-holding setting of the inclinometer, when the inclinometer is placed in a drilling tool, such as MWD or LWD, the inclination guiding inclinometer cannot be set because the annular space between the wireless logging instrument and the inner hole of the drilling tool is small, and the throwing ball cannot reach the ball seat through the annular space; the third is a ball-free whipstock that allows both drilling fluid circulation and hydraulic setting, such as the wireless self-orienting hydraulic whipstock disclosed in CN 210918882U. Due to the structural problems of the prior two hydraulic inclinometers, the wireless logging instrument cannot be applied to the orientation of the two hydraulic inclinometers. While the third type of inclinometer can be oriented by MWD or LWD, its application is limited due to its complex structure, great processing difficulty and high operating requirements for controlling the drilling fluid displacement of the well group.

Disclosure of Invention

The technical problem to be solved by the utility model is to provide the hydraulic inclined guide device which can circulate drilling fluid when the wireless logging instrument is oriented in the MWD or LWD mode, can realize pressure holding setting after the orientation is finished, and is reliable in work and convenient for the orientation of the wireless logging instrument.

In order to solve the problems, the utility model adopts the following technical scheme:

the utility model provides a hydraulic pressure leads oblique ware convenient to wireless logging instrument is directional, includes hollow joint, the feeder that connects gradually, leads oblique ware angle iron and sits and seal anchor, is equipped with a locating key along radial on hollow joint, is equipped with the head at the lower conical body hole lower extreme of sitting and sealing anchor, its special character is: the end socket is provided with a plurality of water holes, wherein the water holes are stepped holes and form annular setting clamping edges at the steps, and the annular setting clamping edges are used for realizing drilling fluid circulation and setting after a plurality of setting balls are put into the annular setting clamping edges; and the other side of the hollow joint corresponding to the positioning key is provided with a ball passing groove along the axial direction of the positioning key, so that the wireless logging instrument is used for positioning and then throwing a setting ball into the inclined guide to realize setting.

As a further preferable mode, a circular groove is formed in the inner end of the sealing head, and the water through holes are uniformly distributed in the bottom of the circular groove along the circumferential direction so as to facilitate smooth setting.

As a further preference, the diameter of the setting ball is greater than 2mm of the inner diameter of the bore of the water port to facilitate passage through the annular space between the wireless logging instrument and the bore of the drilling tool.

Further preferably, the sum of the cross-sectional areas of the small holes of the plurality of water through holes is larger than the circular area with the diameter of 15 mm, so that the pressure holding during the circulation of the drilling fluid is avoided.

As a further preferable mode, the positioning key protrudes 3 mm from the inner wall of the hollow joint and is aligned with the central line of the inclined plane of the inclined iron of the inclined guide; and the positioning key is matched with a key groove on the wireless logging instrument for determining the inclined plane direction of the inclined iron of the inclined guide.

As a further preference, a section of the hole of the hollow joint, corresponding to the positioning key, has a diameter which is 2mm greater than the diameter of the wireless logging instrument primer.

The beneficial effects of the utility model are as follows:

1. because the inclined guide is provided with the plurality of water holes on the sealing head, the water holes are stepped holes and form annular setting clamping edges at the steps, drilling fluid circulation can be realized through the water holes, and setting is realized after a plurality of setting balls are put into the water holes; therefore, after the orientation of the inclined guide is finished, a plurality of setting balls are thrown into the drilling tool from the wellhead and the pump is started for circulation, the plurality of setting balls fall onto the setting clamping edge to realize pressure holding, and when the pressure holding reaches a preset value, the setting of the inclined guide is finished. Thus, not only can the requirement of circulating drilling fluid when the wireless logging instrument MWD or LWD is adopted for the direction of the inclinometer be met, but also the setting pressure-holding requirement of the inclinometer after the direction is finished can be met; the operation is reliable, the orientation operation is greatly simplified, the orientation time is shortened, and considerable orientation cost is saved.

2. Because the ball passing groove is arranged on the other side of the hollow joint corresponding to the positioning key along the axial direction of the positioning key, the wireless logging instrument is used for positioning and then putting the setting ball into the inclined guide to realize setting; therefore, the inclined guide device can realize the simultaneous well descending with the wireless logging instrument, and the drilling fluid can be directly circulated to start the orientation and the setting of the inclined guide device when reaching the preset position in the well, thereby not only omitting the operation of lifting the logging instrument by using the logging instrument, but also avoiding the blockage caused by the falling and accumulation of impurities attached to the inner wall of the drilling tool due to the lifting of the logging instrument, and leading the inclined guide device to be unable to be set; the directional operation time and the well construction period are greatly shortened, and the setting success rate of the inclined guide is improved.

3. Because the sealing head is provided with the water through holes, the drilling fluid inside and outside the drilling tool is communicated, and therefore, the phenomenon that the drilling tool cannot be set due to incorrect setting caused by pressure excitation or suction in the operation of lifting and lowering the inclined guiding device can be avoided, and the phenomenon that the drilling tool is blocked by precipitation of impurities of the drilling fluid can be avoided.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is a partial enlarged view of fig. 1.

Fig. 3 is a cross-sectional view A-A of fig. 2.

In the figure: the device comprises a shoe guide pipe 1, a sealing head 2, a water through hole 201, a circular groove 202, a longitudinal slip 3, a shearing screw 4, a lower conical body 5, a sealing ring 6, a limiting pipe 7, a strip-shaped hole 701, a cylinder sleeve 8, an upper conical body 9, a radial slip 10, a jet pipe 11, a deflector chute 12, a liquid guide pipe 13, a hollow joint 14, a ball passing groove 141, a positioning key 15, a elbow seat 16, an elbow body 17, a hook body 18, an arc clamping groove 181, a split clamping ring 19, a feeder 20, a supporting sleeve 21, a fastening screw 22 and a limiting screw 23.

Detailed Description

1-3, the hydraulic inclinometer comprises a hollow joint 14, a tubular feeder 20, an inclinometer wedge 12 and a setting anchoring device which are connected in sequence, wherein the hollow joint 14 and the feeder 20 are coaxially arranged and connected through threads, a liquid guide tube 13 which is communicated with the inner hole of the feeder 20 and the inner cavity of the setting anchoring device is arranged in the inclinometer wedge 12, a positioning key 15 is inserted and welded in the middle part of the hollow joint 14 in the radial direction, and the positioning key 15 protrudes out of the inner wall of the hollow joint 14 by 3 millimeters and is aligned with the inclined plane central line of the inclinometer wedge 12; and the locating key 15 mates with a keyway on the wireless tool for determining the orientation of the incline of the guide ramp 12.

The diameter of a section of the inner hole of the hollow joint 14 corresponding to the positioning key 15 is 2mm larger than the diameter of the wireless logging instrument primer, and a ball passing groove 141 is formed in the other side of the hollow joint corresponding to the positioning key along the axial direction of the hollow joint, so that the wireless logging instrument is used for positioning and then putting a setting ball into the inclined guide to realize setting.

The feeder 20 is pressed on the inclined surface of the inclined guide iron 12, and the upper end of the inclined surface of the inclined guide iron 12 and the positioning key 15 are respectively positioned at two sides of the axis of the hollow joint 14 and the feeder 20 which are coaxially arranged. The oblique iron 12 of the oblique guide is a solid oblique iron, and the inclined surface on the oblique iron 12 of the oblique guide is a plane or a curved surface.

The lower end of the feeder 20 is fixedly connected with a hook body 18 through threads and welded, an elbow body 17 is inserted in the hook body 18, the upper end of the elbow body 17 penetrates through the central hole of the hook body 18 and then is inserted into the central hole of the feeder 20 in a sealing mode, an annular groove is formed in the upper portion of the outer edge of the elbow body 17, and a split clamping ring 19 is arranged between the upper end of the hook body 18 and the feeder 20 in the annular groove and used for clamping the elbow body 17.

An arc-shaped clamping groove 181 is processed on the inclined surface of the inclined iron 12 of the inclined guide corresponding to the hook body 18, an integrated arc-shaped hook is arranged on the hook body 18 and is clamped in the arc-shaped clamping groove 181 after rotating, the front end of the elbow body 17 is inserted into the inclined iron 12 of the inclined guide and is communicated with the upper end of the liquid guide tube 13, so that the feeder 20 can be separated from the inclined iron 12 of the inclined guide by rotating a drilling tool after setting. The bent head seat 16 is fixedly welded at the position of the inclined iron 12 corresponding to the bent head body 17, the bent head seat 16 is overlapped with the outer edge of the inclined iron 12, the arc-shaped clamping groove 181 is arranged on the bent head seat 16, the front end of the bent head body 17 is inserted into a liquid guide hole formed in the bent head seat 16 in a sealing manner through clearance fit and is communicated with the liquid guide tube 13, and the bent head seat 16 is radially provided with a limit screw 23 connected with an arc-shaped hook.

The middle outer edge of the feeder 20 is fixedly sleeved with a supporting sleeve 21, a fastening screw 22 is radially arranged on the inclined iron 12 of the inclined guide corresponding to the supporting sleeve 21, and the front end of the fastening screw 22 is screwed into the supporting sleeve 21.

The setting anchoring device comprises a cylinder sleeve 8 fixedly connected to the outer edge of the lower end of the inclined iron 12 of the inclined guide and a jet pipe 11 inserted into and fixed in a central hole of the lower end of the inclined iron 12 of the inclined guide, and the upper end of the jet pipe 11 is mutually spliced with the lower end of the liquid guide pipe 13; the cylinder sleeve 8 is internally provided with a hollow upper cone 9 and a hollow lower cone 5, the lower end of the jet pipe 11 is inserted into the central hole of the upper cone 9, and sealing rings 6 are respectively arranged between the jet pipe 11 and the upper cone 9 and between the upper cone and the cylinder sleeve 8. Radial slips 10 are uniformly distributed on the outer wall of the upper conical body 9 through the circumference of the shear screw 4, longitudinal slips 3 are uniformly distributed on the outer wall of the lower conical body 5 through the circumference of the shear screw 4, the radial slips 10 and the longitudinal slips 3 can extend out of rectangular openings arranged on the outer wall of the cylinder sleeve 8 under the pushing of the upper conical body 9 and the lower conical body 5, a limiting pipe 7 for connecting the upper conical body and the lower conical body is arranged in a central hole of the lower conical body 5, the upper end of the limiting pipe 7 is connected with the upper conical body 9 through coarse tooth threads, the limiting pipe 7 is connected with the lower conical body 5 through fine tooth zigzag threads, the fine tooth zigzag thread tips on the limiting pipe 7 face downwards, strip-shaped holes 701 which are longitudinally arranged are uniformly distributed on the pipe wall of the limiting pipe 7 corresponding to the lower conical body 5 in the circumference, and a shoe leading pipe 1 is connected with the lower end of the cylinder sleeve 8 through threads;

the lower end of the inner hole of the lower cone 5 is fixedly connected with a seal head 2, a plurality of water holes 201 are formed in the seal head 2, the water holes 201 are stepped holes, annular setting clamping edges are formed at the stepped positions, and the annular setting clamping edges are used for realizing drilling fluid circulation and setting after a plurality of setting balls are put into the annular setting clamping edges; the inner end of the sealing head 2 is provided with a circular groove 202, and the water through holes are uniformly distributed at the inner bottom of the circular groove 202 along the circumferential direction so as to facilitate smooth setting.

The sum of the cross sections of the small holes of the water through holes is larger than the circular area with the diameter of 15 mm, so that the pressure is prevented from being blocked when the drilling fluid is circulated. The diameter of the setting ball is 2mm larger than the inner diameter of the small hole at the lower part of the water through hole, so that the setting ball can pass through an annular space between the wireless logging instrument and the inner hole of the drilling tool conveniently.

When the wireless logging tool is operated, the inclinometer is connected with the non-magnetic drill collar through the hollow joint 14, the wireless logging tool, namely the MWD or LWD, is placed in the non-magnetic drill collar, the wireless logging tool reaches the inner cavity of the hollow joint 14 under the action of self gravity, when the wireless logging tool primer continues to descend through the positioning key 15, due to the limitation of the size of the inner cavity of the hollow joint 14 and the positioning key 15 and the self gravity, the MWD or LWD nib is forced to guide the key seat on the positioning key 15, then the non-magnetic drill collar is connected with a drilling tool, the inclinometer is placed at a preset underground position through the drilling tool, the drilling fluid is pumped, and the inclined plane azimuth angle of the inclinometer inclined iron 12 is adjusted to a designed azimuth through rotating the drilling tool according to measured data of the MWD or LWD, so that the inclinometer inclined plane orientation operation is completed.

After the orientation of the deflection guide is finished, a plurality of setting balls are put into the drilling tool and connected with the upper drill rod to open a pump, the quantity of the input setting balls is larger than the quantity of water holes, the drilling fluid carries the setting balls to sequentially pass through the inner hole of the drilling tool, the annular space between the wireless logging instrument and the non-magnetic drill collar, the ball passing groove 141 in the hollow joint 14, the feeder 20, the elbow body 17, the liquid guide tube 13, the jet pipe 11, the inner hole of the upper cone 9 and the inner hole of the limiting pipe 7, finally fall into the circular groove 202 and are respectively clamped on the setting clamping edges in each water hole 201, so that the plurality of water holes 201 of the lower end seal head 2 of the lower cone are closed, and the circulating channel is blocked. The high pressure drilling fluid eventually enters between the upper and lower cones through the strip holes 701. When the drilling fluid is filled between the upper cone and the lower cone, the drilling fluid pushes the upper cone 9 and drives the limit pipe 7 to slide with the lower cone 5 due to certain elasticity caused by strip-shaped holes uniformly distributed on the limit pipe 7, meanwhile, the upper cone and the lower cone shear the shearing screw 4 and force the radial slips 10 and the longitudinal slips 3 to be clamped on the well wall, when the pumping pressure reaches a preset value, the pump is stopped and the pressure is stabilized for 30 seconds, the drilling tool can be rotated positively, the drilling tool drives the feeder 20 to rotate to shear the limit screw 23 and the fastening bolt 22, the arc-shaped hook on the hook body 18 is screwed out from the arc-shaped clamping groove 181, and the lower end of the elbow body 17 is pulled out from the elbow seat 16; and then the drilling tool is started, the hollow joint 14, the feeder 20, the hook body 18 and the elbow body 17 are taken out of the well, and finally a milling cone is put in to perform windowing operation along the inclined plane of the inclined iron 12 of the inclined guide.

Although embodiments of the present utility model have been disclosed above, it is not limited to the details and embodiments shown and described, it is well suited to various fields of use for which the utility model would be readily apparent to those skilled in the art, and accordingly, the utility model is not limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.

Claims

1. The utility model provides a hydraulic pressure leads oblique ware convenient to wireless logging instrument is directional, includes hollow joint, the feeder that connects gradually, leads oblique ware angle iron and sits and seal anchor, is equipped with a locating key along radial on hollow joint, is equipped with the head, characterized by at the lower conical body hole lower extreme of setting anchor: the end socket is provided with a plurality of water holes, wherein the water holes are stepped holes and form annular setting clamping edges at the steps, and the annular setting clamping edges are used for realizing drilling fluid circulation and setting after a plurality of setting balls are put into the annular setting clamping edges; and the other side of the hollow joint corresponding to the positioning key is provided with a ball passing groove along the axial direction of the positioning key, so that the wireless logging instrument is used for positioning and then throwing a setting ball into the inclined guide to realize setting.

2. The hydraulic whipstock of claim 1, wherein the hydraulic whipstock facilitates orientation of a wireless tool, wherein: the inner end of the sealing head is provided with a circular groove, and the water through holes are uniformly distributed at the bottom in the circular groove along the circumferential direction so as to facilitate smooth setting.

3. The hydraulic whipstock of claim 1, wherein the hydraulic whipstock facilitates orientation of a wireless tool, wherein: the diameter of the setting ball is 2mm larger than the inner diameter of the small hole of the water through hole so as to conveniently pass through an annular space between the wireless logging instrument and the inner hole of the drilling tool.

4. A hydraulic whipstock for facilitating orientation of a wireless tool as claimed in any one of claims 1-3, wherein: the sum of the cross sections of the small holes of the water through holes is larger than the circular area with the diameter of 15 mm, so that the pressure is prevented from being blocked when the drilling fluid is circulated.

5. The hydraulic whipstock of claim 1, wherein the hydraulic whipstock facilitates orientation of a wireless tool, wherein: the positioning key protrudes 3 mm from the inner wall of the hollow joint and is aligned with the central line of the inclined plane of the inclined iron of the inclined guide; and the positioning key is matched with a key groove on the wireless logging instrument for determining the inclined plane direction of the inclined iron of the inclined guide.

6. The hydraulic whipstock of claim 1 or 5, wherein the hydraulic whipstock facilitates orientation of a wireless tool, wherein: and the aperture of a section of the hollow joint inner hole corresponding to the positioning key is 2mm larger than the diameter of the wireless logging instrument primer.