CN110273677B

CN110273677B - Short-radius inclinometer while drilling

Info

Publication number: CN110273677B
Application number: CN201910649611.1A
Authority: CN
Inventors: 冯建宇; 郑学峰
Original assignee: BEIJING LIUHE GREATNESS TECHNOLOGY CO LTD
Current assignee: BEIJING LIUHE GREATNESS TECHNOLOGY CO LTD
Priority date: 2019-07-18
Filing date: 2019-07-18
Publication date: 2023-01-17
Anticipated expiration: 2039-07-18
Also published as: CN110273677A

Abstract

The invention discloses a short-radius inclinometer while drilling, which comprises a first suspended drill collar and a second suspended drill collar, wherein the first suspended drill collar and the second suspended drill collar are connected through a flexible hinge joint; the integral pup joint is arranged in the second suspended drill collar, and is connected with the second suspended drill collar through the auxiliary connecting seat after being arranged in the pressure-resistant cylinder, the inner wall of the second suspended drill collar is provided with a second battery pack, and the second battery pack is threaded to supply power to the integral pup joint; the wireless short transmission technology is adopted, so that the bending angle is large; and the power-saving mode is adopted for working, so that the consumption is reduced.

Description

Short-radius inclinometer while drilling

Technical Field

The invention relates to the technical field of inclinometers, in particular to a short-radius inclinometer while drilling.

Background

The foreign short-radius sidetrack horizontal well starts earlier, the process technology is gradually improved, and the application scale is continuously enlarged.

An articulated screw motor system developed by petroleum exploration and development scientific research institute machinery adopts power required by two sections of screw motor joints, and the two sections of screw motor joints are connected by an articulated joint. The maximum rigidity length is 1.5m, the manufacturing slope is 3-5 degrees/m, the curvature radius is less than or equal to 18m, the borehole can be changed from vertical to horizontal within the 28m curve borehole length, the indoor test and the field intermediate test of a prototype meet the design requirements, and the specifications of phi 120.65mm and phi 89.9mm are provided through the acceptance and evaluation of relevant experts, so that the borehole can be used for drilling a short-radius horizontal well on the inner side of a casing.

The high build rate of short radius horizontal wells is difficult to pass through downhole drill strings using conventional instrumentation, necessitating the use of small-scale or flexibly-connected inclinometers. The inclinometer mainly comprises a gyro inclinometer, an ESS electronic multi-point, a wired inclinometer while drilling and an MWD wireless measurement while drilling instrument.

The wireless MWD while drilling instrument is designed in a modularized mode, and all modules are connected through flexible joints. Wireless MWD while drilling can be divided into two categories, depending on the location of the mud pulse generator: one places a mud pulser in a short radius bottom joint, and is a down-seated key MWD while drilling; the other type of upper drill tool for placing a short radius is an upper suspension wireless MWD while drilling. The existing wireless MWD while drilling has low working efficiency, and needs to be improved.

Disclosure of Invention

The invention aims to provide a short-radius inclinometer, which solves the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a short-radius inclinometer while drilling comprises a first suspended drill collar and a second suspended drill collar, wherein the first suspended drill collar and the second suspended drill collar are connected through a flexible hinge joint; the integrated sub is installed inside the second suspension drill collar, the integrated sub is connected with the second suspension drill collar through an auxiliary connecting seat after being installed into the compression-resistant cylinder, a second battery pack is installed on the inner wall of the second suspension drill collar, the second battery pack is threaded to supply power to the integrated sub, and the integrated sub is an integrated movement structure of a probe tube and a gamma ray.

Preferably, a wireless receiving module is installed inside the first hanging drill collar; and a wireless transmitting module is arranged in the second suspended drill collar, and the probe tube in the integrated short section is communicated with the pulser through the wireless transmitting module and the wireless receiving module.

Preferably, the pulser is a rotary valve pulser.

Preferably, the first battery pack and the second battery pack both adopt lithium batteries.

Compared with the prior art, the invention has the beneficial effects that: the invention has novel structural design, convenient operation, stable pulse signal and strong anti-interference capability; the wireless short transmission technology is adopted, so that the bending angle is large; and the power-saving mode is adopted for working, so that the consumption is reduced.

Drawings

FIG. 1 is a schematic view of the structure of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within 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", "rear", "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 describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be configured in a specific orientation, and operate, 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, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the two elements can be directly connected or indirectly connected through an intermediate medium, and the two elements can be communicated with each other. The meaning of the above terms in the present invention can be understood in a specific case by those skilled in the art.

Referring to fig. 1, the present invention provides a technical solution: a clinometer while drilling for short radius comprises a first suspension drill collar 1 and a second suspension drill collar 2, wherein the first suspension drill collar 1 and the second suspension drill collar 2 are connected through a flexible hinge joint 3, a first battery pack 4 is installed on the inner wall of the first suspension drill collar 1, a pulser 5 is also installed at the end part of the first suspension drill collar 1, and the first battery pack 4 is threaded through an auxiliary connecting seat to supply power to the pulser 5; the integrated pup joint 6 is installed inside the second suspension drill collar 2, after the integrated pup joint 6 is installed into a pressure-resistant cylinder, the integrated pup joint is connected with the second suspension drill collar 2 through an auxiliary connecting seat, a second battery pack 7 is installed on the inner wall of the second suspension drill collar 2, the second battery pack 7 is threaded to supply power to the integrated pup joint 6, and the integrated pup joint 6 is an integrated core structure of a probe tube and a gamma ray. Wherein the counting range of the gamma probe tube is as follows: 250CPS; sensitivity is 1.5CPS/API, precision is 5%, resolution is 200mm, and highest temperature resistance is as follows: 150 ℃, the highest pressure resistance is 140MPa, the maximum allowable impact is 1000G@0.5ms, and the maximum allowable vibration is 30G @ 50-300 HZ; the first battery pack 4 and the second battery pack 7 both adopt lithium batteries; wherein, a wireless receiving module 9 is arranged in the first hanging drill collar 1; a wireless transmitting module 8 is installed inside the second hanging drill collar 2, and a probe in the integrated short section 6 is communicated with the pulser 5 through the wireless transmitting module 8 and the wireless receiving module 9.

In the invention, the pulser 5 adopts a rotary valve pulser, which has the following highest temperature resistance: 150 ℃, the maximum pressure resistance is 140MPa, the maximum allowable impact is 10000m/s < 2 >, the maximum allowable vibration is 200m/s < 2 >, and the depth of a signal transmission well is more than 6000m.

In conclusion, the invention has novel structural design, convenient operation, stable pulse signals and strong anti-interference capability; the wireless short transmission technology is adopted, so that the bending angle is large; and the power-saving mode is adopted for working, so that the consumption is reduced.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. 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 short radius is with boring inclinometer, includes first suspension drill collar (1), second suspension drill collar (2), its characterized in that: the first hanging drill collar (1) and the second hanging drill collar (2) are connected through a flexible hinge joint (3), a first battery pack (4) is mounted on the inner wall of the first hanging drill collar (1), a pulser (5) is further mounted at the end of the first hanging drill collar (1), and the first battery pack (4) is threaded through an auxiliary connecting seat to supply power to the pulser (5); an integrated pup joint (6) is installed inside the second suspended drill collar (2), the integrated pup joint (6) is connected with the second suspended drill collar (2) through an auxiliary connecting seat after being installed in a pressure-resistant cylinder, a second battery pack (7) is installed on the inner wall of the second suspended drill collar (2), the second battery pack (7) is threaded to supply power to the integrated pup joint (6), and the integrated pup joint (6) is of a probe pipe and gamma integrated core structure;

a wireless receiving module (9) is arranged in the first hanging drill collar (1); a wireless transmitting module (8) is installed inside the second hanging drill collar (2), and a probe in the integral pup joint (6) is communicated with the pulser (5) through the wireless transmitting module (8) and the wireless receiving module (9).