Direct current controlled underwater test tree

A technology for controlling water and testing trees, applied in wellbore/well components, earthmoving, sealing/packing, etc., can solve problems such as easy leakage of hydraulic oil, pollution of hydraulic system stability, slow response speed of hydraulic control, etc. , to avoid waste of time and capital costs, improve work efficiency and response speed, and solve the effect of control and response lag

Pending Publication Date: 2019-12-03
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the long-distance hydraulic pipeline control in the deep water environment has a certain lag in response time, which greatly affects the evacuation efficiency of the drilling ship, and the hydraulic oil is prone to leakage, and its own compressibility will cause pipeline failure after a long time. deformation; and when the environment changes too much, the oil temperature and load change greatly, and it is difficult to maintain the stability of the load movement speed; the pollution of hydraulic oil has a significant impact on the stability of the hydraulic system, and may even cause the hydraulic system to fail; The flow in the pipeline will cause pressure loss. When the pipeline is long, the pressure loss will be greater and the power transfer efficiency will decrease.
Therefore, hydraulic transmission is not suitable for long-distance control and transmission, which limits the scope of underwater test trees; and the response speed of hydraulic control is slow, which is not conducive to the realization of efficient control

Method used

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  • Direct current controlled underwater test tree
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  • Direct current controlled underwater test tree

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0033] When the upper hollow shaft motor (1) receives the electric signal, the rotor (2) of the upper hollow shaft motor starts to rotate, and at the same time drives the upper movable push ring (3) to move, and the upper movable push ring (3) pushes to the right and drives the ball lock Mechanism (5) moves to the right, and the ball lock core (6) begins to move to the right under the effect of the driving force, when the ball lock core (6) moves to the middle pipe outer shell (10) (as Figure 4 ), because the diameter of the ball lock core installation hole (1001) of the middle pipeline outer shell (10) is smaller than the diameter of the ball, under the active force of the upper movable push ring (3), the ball lock core (6) is fixed on the middle pipeline outer shell (10) in the ball lock cylinder installation hole (1001), thus connecting the upper part and the middle part of the pipe, under the action of the ball lock mechanism (5), the connector pipe is connected with the s...

Embodiment approach 2

[0035] When an emergency occurs in the platform operation, first the middle hollow shaft motor (12) and the lower hollow shaft motor (17) rotate in reverse after receiving the signal, and the ball valve is closed through the cooperation of the rack and gear, and then the upper hollow shaft motor (1) is connected to the signal, the rotor (2) of the upper hollow shaft motor rotates in reverse, the upper movable push ring (3) moves upward to the limit position of the upper hollow shaft motor (1) under the constraint of the thread, and the upper hollow shaft motor (1) performs idling, At the same time, the sea level lifts the operating machine upwards, and the ball lock mechanism (5) moves upwards. Under the action of the ball lock mechanism (5), the ball lock core (6) is lifted from the ball lock core mounting hole (1001) of the middle pipe shell (10). ) slide out (such as Figure 5 ), and move upwards along with the upper acting machine, while the upper active push ring (3) limi...

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Abstract

The invention discloses a direct current controlled underwater test tree. The direct current controlled underwater test tree mainly comprises two parts, namely, a connector and a safety valve, whereinthe connector consists of a movable pushing ring, a ball locking mechanism, a cable channel, a wet connector and a hollow shaft motor; and the safety valve consists of a movable pushing ring, a hollow shaft motor, a cable channel, a ball valve mechanism, a gear-rack device and a buffering device. The connector controls the ball locking mechanism thereof to work through the hollow shaft motor so as to realize the disconnection or connection of a test tubular pipe; and two ball valves are distributed up and down in the safety valve and are both controlled to rotate by the cooperation of the hollow shaft motor and a gear-rack so as to realize blocking, shearing or starting. According to the direct current controlled underwater test tree, the control of the connector and the safety valve in the underwater test tree is realized through the hollow shaft motor; the overall control and response speed is improved; the disadvantage of hydraulic control is overcome; the requirement on the safetycontrol of the tubular pipe of deep water oil and gas testing operation is met; and the safety of operating ship, personnel, equipment and environment in an emergency situation is ensured.

Description

technical field [0001] The invention relates to the field of offshore oil and gas development, in particular to a direct-electric control underwater test tree. Background technique [0002] With the development of industry in today's society, people's demand for resources is also increasing, and land resources are no longer enough to meet human demand for resources. Therefore, since the last century, people have turned their attention to the exploitation of marine resources. In the exploitation of marine resources, the exploitation of deep sea oil and gas is the main focus. Especially after entering the 21st century, the oil and gas development strategies of various countries are gradually shifting to the ocean. It is not difficult to predict that in the future resource war, deep-water oil and gas will occupy a large proportion. [0003] Oil and gas testing is an essential part of deepwater oil and gas development. During deep water testing, the floating platform or drill...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B34/04
CPCE21B34/045
Inventor 唐洋孙鹏李泽良王文王燕飞罗丹丹黄云磊任杰隆
Owner SOUTHWEST PETROLEUM UNIV
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