CN214035641U

CN214035641U - Wireless measurement while drilling system applied to ultra-short radius drilling

Info

Publication number: CN214035641U
Application number: CN202022191157.0U
Authority: CN
Inventors: 冯建宇; 杨勇
Original assignee: BEIJING LIUHE GREATNESS TECHNOLOGY CO LTD
Current assignee: Shangqiu Rui control instrument and Instrument Co.,Ltd.
Priority date: 2020-09-29
Filing date: 2020-09-29
Publication date: 2021-08-24
Anticipated expiration: 2030-09-29

Abstract

The utility model discloses a be applied to wireless measurement while drilling system of ultrashort radius well drilling, including main valve head subassembly, salvage the head subassembly, first articulated centralizer and the articulated centralizer of second, main valve head subassembly passes through the articulated centralizer of second and connects the pulser subassembly, and the pulser subassembly connects gyroscopic sensor through first articulated centralizer, and gyroscopic sensor connects battery pack through first articulated centralizer, and the battery pack passes through first articulated centralizer and connects salvage the head subassembly, the utility model discloses an adopt articulated centralizer or flexible centralizer to connect between each subassembly, realized that dog leg degree exceeds 100/30 m's radial horizontal well drilling, adopt gyroscopic sensor to replace the flux gate to visit the pipe subassembly design simultaneously, can realize that the gesture measured data is accurate in the cover pipe, guide the sleeve pipe operation of windowing.

Description

Wireless measurement while drilling system applied to ultra-short radius drilling

Technical Field

The utility model relates to an instrument technical field in the oil well specifically is a be applied to wireless measurement while drilling system of ultrashort radius well drilling.

Background

The traditional wireless measurement while drilling system downhole instrument comprises a main valve head component, a pulser component, a probe tube component, a battery component, a fishing head component and the like, wherein the components are connected by adopting a centralizer, the probe tube adopts three mutually perpendicular fluxgates and three mutually perpendicular accelerometers as measurement sensors, attitude parameters such as well inclination, direction, tool surface and the like are calculated by a formula, and then the attitude parameters are uploaded to the ground through the pulser for receiving and decoding.

The wireless measurement while drilling system is widely applied to drilling operation with the dog leg degree of less than 16 degrees/30 m, but with continuous application and popularization of the radial horizontal well technology, operation of ultra-short radius horizontal wells is more and more, and the dog leg degree of the ultra-short radius horizontal well can reach more than 100 degrees/30 m. At the moment, the conventional wireless measurement while drilling system is applied to operate, and the borehole trajectory with large dog-leg degree cannot be passed through. In addition, most of ultra-short radius horizontal wells are used for reconstruction of old wells, measurement and windowing are needed in a sleeve, and a conventional probe adopts a fluxgate to measure the azimuth and the magnetic tool surface, so that a large error exists.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a be applied to wireless measurement while drilling system of ultrashort radius well drilling to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a be applied to wireless measurement while drilling system of boring of super short radius well drilling, includes main valve head subassembly, salvage head subassembly, the articulated ware of rightting of first articulated ware and second, main valve head subassembly passes through the articulated ware of righting of second and connects the pulser subassembly, the pulser subassembly is through first articulated centralizer connection gyroscopic sensor, the gyroscopic sensor passes through first articulated centralizer and connects battery pack, battery pack passes through first articulated centralizer and connects the salvage head subassembly.

Preferably, the first hinge centralizer and the second hinge centralizer respectively comprise a spherical connecting piece, a right end connecting piece and a left end connecting piece, the left side of the spherical connecting piece is designed to be of a spherical structure, four planes are uniformly milled on the spherical surface in the circumferential direction, four holes are processed perpendicular to the planes, the center of each hole is coincided with the diameter of each ball, and four universal transmission keys are respectively installed in the holes; an inner joint is arranged in the left end connecting piece, a concave spherical surface is processed at the right end of the inner joint, and the diameter of the concave spherical surface is consistent with that of the outer spherical surface of the spherical connecting piece.

Preferably, 4 key grooves distributed axially are milled in the left end connecting piece and are consistent with the width of the arc surface of the universal transmission key, after the inner joint is installed in the left end connecting piece, the spherical connecting piece and the four universal transmission keys are assembled and then inserted into the key groove corresponding to the left end connecting piece, then the pre-tightening joint and the pre-tightening joint sequentially penetrate through the spherical connecting piece, then the pre-tightening joint is screwed up with the left end connecting piece, and then the right end connecting piece and the spherical connecting piece are assembled.

Preferably, four circumferentially and uniformly distributed centering blocks are arranged on the left end connecting piece, a first aviation plug is arranged on the end face of the right end connecting piece, a second aviation plug is arranged on the end face of the outer side of the left end connecting piece, and the two aviation plugs are connected through a wire.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses an adopt articulated centralizer or flexible centralizer to connect between each subassembly, realized that dog leg degree surpasss 100 degrees/30 m's radial horizontal well drilling, adopt gyro sensor to replace fluxgate to visit a tub subassembly design simultaneously, can realize that the gesture measured data is accurate in the sleeve pipe, guides the operation of casing windowing.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the hinged centralizer of the present invention;

fig. 3 is a schematic structural view of the flexible centralizer of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-2, the present invention provides a technical solution: a wireless measurement while drilling system applied to ultra-short radius drilling comprises a main valve head assembly 20, a fishing head assembly 21, a first hinged centralizer 22 and a second hinged centralizer 23, wherein the main valve head assembly 20 is connected with a pulser assembly 24 through the second hinged centralizer 23, the pulser assembly 24 is connected with a gyro sensor 25 through the first hinged centralizer 22, the gyro sensor 25 is connected with a battery assembly 26 through the first hinged centralizer 22, and the battery assembly 26 is connected with the fishing head assembly 21 through the first hinged centralizer 22. The gyro sensor can be used for realizing accurate attitude measurement data in the casing and guiding the casing windowing operation.

In the utility model, the first and second hinged centralizers comprise a spherical connecting piece 2, a right end connecting piece 1 and a left end connecting piece 8, the left side of the spherical connecting piece 2 is designed into a spherical structure, four planes are uniformly milled on the spherical surface in the circumferential direction, four holes are processed perpendicular to the planes, the hole center coincides with the diameter of the ball, and four universal transmission keys 5 are respectively arranged in each hole; an inner joint 6 is arranged in the left end connecting piece 8, a concave spherical surface is processed at the right end of the inner joint 6, and the diameter of the concave spherical surface is consistent with the diameter of the outer spherical surface of the spherical connecting piece 2; 4 key grooves which are axially distributed are milled in the left end connecting piece 8 and are consistent with the width of the arc surface of the universal transmission key 5, after the inner joint 6 is installed in the left end connecting piece 8, the spherical connecting piece 2 and the four universal transmission keys 5 are assembled and then inserted into the key groove corresponding to the left end connecting piece 8, then the pre-tightening joint 4 and the pre-tightening joint 3 sequentially penetrate through the spherical connecting piece 2, then the pre-tightening joint 3 is screwed up with the left end connecting piece 8, and then the right end connecting piece 1 and the spherical connecting piece 2 are assembled.

The utility model discloses in install the piece 7 of righting of four circumference equipartitions on the left end connecting piece 8, install first circular connector 19 on the 1 terminal surface of right-hand member connecting piece, install second circular connector 9 on the 8 outside terminal surfaces of left end connecting piece, adopt the wire to connect between two circular connectors.

A first sealing ring 10 and a second sealing ring 11 are arranged between the left end connecting piece and the second aviation plug, a third sealing ring 12, a fourth sealing ring 13 and a fifth sealing ring 14 are arranged between the spherical connecting piece and the inner joint, a sixth sealing ring 15 and a seventh sealing ring 16 are arranged between the right end connecting piece and the first aviation plug, an eighth sealing ring 18 is arranged between the spherical connecting piece and the right end connecting piece, and a ninth sealing ring 17 is arranged between the spherical connecting piece and the pre-tightening joint. After the function of the hinged centralizer is realized, the length of each part of the system is controlled within 800 mm.

In order to realize that the two components can be relatively bent so as to smoothly pass through a borehole with a large dog-leg degree, the technical scheme can also adopt a flexible centralizer structure shown in fig. 3, the flexible centralizer comprises a flexible connecting piece 27, a centralizing sleeve 28 and a left connecting piece 29 which are sequentially connected, a part capable of being bent and deformed is designed on the flexible connecting piece, the bending angle is not less than 4 degrees, and the flexible centralizer can be restored after being deformed; in addition, to enable greater dogleg clearance, a double hinge centralizer structure may be designed.

To sum up, the utility model discloses an adopt articulated centralizer or flexible centralizer to connect between each subassembly, realized that dog leg degree surpasss 100 degrees/30 m's radial horizontal well drilling, adopt gyro sensor to replace fluxgate to visit a tub subassembly design simultaneously, can realize that the gesture measurement data is accurate in the cover pipe, guides the operation of casing windowing.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a be applied to wireless measurement while drilling system of boring of ultrashort radius well drilling, includes main valve head subassembly (20), salvage head subassembly (21), first articulated centralizer (22) and the articulated centralizer (23) of second, its characterized in that: the main valve head assembly (20) is connected with the pulser assembly (24) through the second hinged centralizer (23), the pulser assembly (24) is connected with the gyro sensor (25) through the first hinged centralizer (22), the gyro sensor (25) is connected with the battery assembly (26) through the first hinged centralizer (22), and the battery assembly (26) is connected with the fishing head assembly (21) through the first hinged centralizer (22).

2. The wireless measurement-while-drilling system applied to ultra-short radius drilling according to claim 1, wherein: the first hinged centralizer and the second hinged centralizer respectively comprise a spherical connecting piece (2), a right-end connecting piece (1) and a left-end connecting piece (8), the left side of the spherical connecting piece (2) is designed to be of a spherical structure, four planes are uniformly milled on the spherical surface in the circumferential direction, four holes are processed perpendicular to the planes, the center of each hole is coincided with the diameter of a ball, and four universal transmission keys (5) are respectively arranged in the holes; an inner joint (6) is arranged in the left end connecting piece (8), a concave spherical surface is processed at the right end of the inner joint (6), and the diameter of the concave spherical surface is consistent with that of the outer spherical surface of the spherical connecting piece (2).

3. The wireless measurement-while-drilling system applied to ultra-short radius drilling according to claim 2, wherein: the left end connecting piece (8) is internally milled with (4) key grooves which are axially distributed and are consistent with the width of an arc surface of a universal transmission key (5), after an internal joint (6) is installed in the left end connecting piece (8), a spherical connecting piece (2) and four universal transmission keys (5) are assembled and then inserted into the key grooves corresponding to the left end connecting piece (8), then the pre-tightening joint (4) and the pre-tightening joint (3) sequentially penetrate through the spherical connecting piece (2), then the pre-tightening joint (3) is screwed up with the left end connecting piece (8), and then the right end connecting piece (1) and the spherical connecting piece (2) are assembled.

4. The wireless measurement-while-drilling system applied to ultra-short radius drilling according to claim 2, wherein: four circumferentially and uniformly distributed righting blocks (7) are installed on the left end connecting piece (8), a first aviation plug (19) is installed on the end face of the right end connecting piece (1), a second aviation plug (9) is installed on the end face of the outer side of the left end connecting piece (8), and the two aviation plugs are connected through a wire.