Dynamic and static hydraulic connecting device in rotary guide mechanism
A technology of rotary steering and connecting devices, which is applied in directional drilling and other directions to achieve the effects of ensuring sealing, convenient use and reasonable structure
Pending Publication Date: 2018-12-07
BC P INC CHINA NAT PETROLEUM CORP +1
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Problems solved by technology
[0003] The invention provides a dynamic and static fluid connection device in a rotary steering mechanism, which overcomes the above-mentioned deficiencies in the prior art, and can effectively solve the problem of how to smoothly transmit hydraulic pressure from a rotating body to a non-rotating body in a rotating steering mechanism and ensure the sealing effect The problem
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[0011] The present invention is not limited by the following examples, and specific implementation methods can be determined according to the technical solutions of the present invention and actual conditions.
[0012] In the present invention, for the convenience of description, the description of the relative positional relationship of each component is based on the description attached to the description. figure 1 For example, the positional relationship of top, bottom, left, right, etc. is determined according to the layout direction of the drawings in the specification.
[0013] Below in conjunction with embodiment and accompanying drawing, the present invention will be further described:
[0014] as attached figure 1 As shown, the dynamic and static fluid circuit connection device in the rotary guide mechanism includes a dynamic and static fluid circuit connection sleeve 1, an upper dynamic sealing retaining ring 2 and a lower dynamic sealing retaining ring 3; The uppe...
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The invention relates to the technical field of rotary guide device, and is a dynamic and static liquid hydraulic connecting device in a rotary guide mechanism, which comprises a dynamic and static liquid hydraulic connecting sleeve, an upper dynamic sealing baffle ring and a lower dynamic sealing baffle ring; the upper step hole and the lower step hole are respectively arranged on the inner wallof the dynamic and static liquid hydraulic connecting sleeve. The rotary guide mechanism is reasonable and compact in structure and convenient to use, the device is installed in a rotary guiding mechanism as a non-rotating body, so that the conversion between dynamic and static hydraulic branches is smoothly completed, the cooperation between the dynamic sealing ring and the sealing ring effectively ensures the sealing property between the rotating body and the non-rotating body during the hydraulic transmission process and effectively blocks the possibility of communication between each hydraulic path, provides a guarantee for controlling the thrust force of each hydraulic push assembly by controlling the hydraulic oil pressure in each hydraulic push branch in the rotating guide mechanismand obtaining the target guidance force in the guiding operation.
Description
technical field [0001] The invention relates to the technical field of a rotary steering device, and relates to a dynamic and static fluid circuit connection device in a rotary steering mechanism. Background technique [0002] As oilfields around the world have entered the later stage of development, the difficulty of reservoir development has gradually increased, and the formations encountered have become increasingly complex. The challenges faced in the new era have pushed the development of oil and gas fields from conventional development techniques to horizontal wells, extended-reach directional wells, multilateral wells, and small wells. At the same time, the new development technology puts forward higher requirements for drilling technology. The traditional directional drilling technology is mainly based on the sliding-steering technology, but the sliding-steering technology has problems such as large axial friction, difficult cuttings removal during drilling, low dril...
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IPC IPC(8): E21B7/04E21B7/06
CPCE21B7/04E21B7/06
Inventor 李晓军李富强王飞跃张军锋
Owner BC P INC CHINA NAT PETROLEUM CORP