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Push-to-point rotary steerable drilling device

A rotary steerable drilling and pointing technology, which is applied in directional drilling, drilling equipment, drilling automatic control system, etc., can solve the problems of high friction in the horizontal section and difficulty in running casing, and achieve the reduction of electric energy, production cost, The effect of increasing production potential

Active Publication Date: 2015-09-23
SINOPEC OILFIELD EQUIP CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the development of shale gas in my country, during the use of the rotary steerable drilling system with a build-up rate of 5-8° / 30m, the vertical well section is shallow and the horizontal section has high friction, which makes it difficult to run the casing

Method used

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Embodiment Construction

[0023] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings.

[0024] Such as figure 1 , figure 2 As shown, the push-by-pointing rotary steerable drilling device of the present invention includes an upper stabilizer 1, a central shaft 7, a control nipple 2, a control system 9, a hydraulic system 11, a hydraulic eccentric device 13, a stabilizer sleeve 3 and a drill bit 4 .

[0025] The upper stabilizer 1 is fixedly connected with the central shaft 7, and in this embodiment, is connected by threads. The central shaft 7 passes through the control sub-joint 2 , the stabilizer sleeve 3 is connected with the control sub-joint 2 through a ball joint 15 , and the stabilizer sleeve 3 is fixedly connected with the drill bit 4 . In a preferred embodiment, the central shaft 7 is connected...

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Abstract

The invention relates to a push-and-point rotary steerable drilling device, which comprises an upper stabilizer (1), a central shaft (7), a control nipple (2), a stabilizer sleeve (3) and a drill bit (4), and the stabilizer The sleeve (3) is connected to the control nipple (2) through a ball joint (15), the stabilizer sleeve (3) is fixedly connected to the drill bit (4), and the control nipple (2) is equipped with a control system (9) and The hydraulic system (11) guides the hydraulic cylinder (13), and the hydraulic eccentric device (13) is installed between the upper part of the stabilizer sleeve (3) and the control nipple (2), and the hydraulic system (11) drives the hydraulic eccentric device (13) action, the hydraulic eccentric device (13) drives the stabilizer sleeve (3) to rotate around the ball joint (15). The drilling device of the present invention has a simple structure, can complete high build-up rate, builds deeper in the exploitation of shale gas, maximizes the exposed area of ​​oil layers, reduces development risks, and improves oil and gas production potential.

Description

technical field [0001] The present invention relates to a rotary steerable drilling system, more specifically, to a push-and-point rotary steerable drilling device. Background technique [0002] Most of the oil fields at home and abroad have entered the late stage of development, and most of the new exploration areas are located in special environments such as oceans, beach seas, and deserts, which will inevitably make complex structures such as extended-reach wells, horizontal wells in ultra-thin oil and gas layers, multi-branch wells, and vertical ultra-deep wells. Wells account for an increasing proportion of oil and gas exploration and development. Rotary steerable technology is a high-tech emerging to meet the needs of these complex structure well drilling operations, and it is a new direction of modern steerable drilling. However, due to the technical blockade imposed by foreign countries, no products are sold to the outside world, and only high-priced technical servi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B7/04E21B44/00
Inventor 张策
Owner SINOPEC OILFIELD EQUIP CORP
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