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Deepwater cluster well factory batch drilling and completion equipment and drilling and completion method

A deep-water cluster drilling and completion technology, which is applied to underwater drilling, drilling equipment, wellbore/well components, etc., can solve the problems of long construction time and high cost, reduce drilling cost, reduce time loss, improve The effect of docking efficiency

Active Publication Date: 2021-01-22
CNOOC TIANJIN BRANCH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the existing technology, especially the problems of long construction time and high cost of deepwater drilling single wells, the present invention proposes a batch drilling and completion design and construction method for deepwater cluster well factories

Method used

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  • Deepwater cluster well factory batch drilling and completion equipment and drilling and completion method
  • Deepwater cluster well factory batch drilling and completion equipment and drilling and completion method
  • Deepwater cluster well factory batch drilling and completion equipment and drilling and completion method

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Experimental program
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Effect test

Embodiment 1

[0061] Such as Figure 1-4 As shown, a deep water cluster well factory batch drilling and completion equipment, the equipment includes a platform system and a subsea system.

[0062] The platform system includes a signal actuator 13, a computer terminal 14, an annulus debris-containing drilling fluid discharge pipeline 17, a vibrating screen 18, a mud pool 19, a seawater suction pipeline 20, a mud storage tank 21, a drilling fluid mixer 22, Drilling fluid injection pump 23, drilling fluid injection pipeline 24, drilling platform 25; said signal actuator 13, computer terminal 14, drilling fluid discharge pipeline 17 containing cuttings in the annulus, vibrating screen 18, mud pool 19, seawater suction pipeline 20. The mud storage tank 21, the drilling fluid mixer 22, the drilling fluid injection pump 23, and the drilling fluid injection pipeline 24 are all located on the drilling platform 26; one end of the computer terminal 14 is connected to the signal actuator 13, and the ot...

Embodiment 2

[0067] Using the equipment described in Embodiment 1, aiming at the drilling and completion process of deep water cluster well factories, a batch drilling and completion design and construction method for deep water cluster well factories includes the following steps:

[0068](1) Optimal design of deepwater cluster well factory drilling and completion: according to the geological data of the drilled block, the benefits and costs and other parameters, optimize the design of the number of deepwater cluster well factory well groups and platform positions in the drilled block , wellhead allocation, wellbore trajectory, well completion mode and other parameters.

[0069] According to the geological data of the drilled block, considering the economic benefits and costs of cluster well drilling, the number of wells in the deep water cluster well factory is optimally designed according to the well number optimization model in the following formula:

[0070] ΔC c (n)=C 1 (n)+C 2 (n)...

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Abstract

The invention relates to deepwater cluster well factory batch drilling and completion equipment and a drilling and completion method, and belongs to the technical field of marine oil and gas drillingand completion. The deepwater cluster well factory batch drilling and completion equipment comprises a platform system and an underwater system, the platform system comprises a drilling platform, a signal execution mechanism, a computer terminal, a drilling fluid injection pump, a drilling fluid injection pipeline, a vibration wave receiver and the like, and the signal execution mechanism is connected with a ROV and a drill bit through a control rope and a cable and transmits an instruction; the underwater system comprises a drill rod, a marine riser, a sleeve pipe, a MWD, a drill bit, a cable, the ROV and the control rope; the MWD is used for monitoring well track data; and the ROV is used for monitoring well drilling and well cementation returning conditions in real time. Well drilling and completion parameters of the deepwater cluster well are optimized, well drilling and completion operation of different wells is completed in batches according to the opening sequence, time loss inthe deepwater oil and gas well drilling and completion process is remarkably reduced, the deepwater oil and gas well drilling and completion efficiency is improved, and the well drilling and completion cost is reduced.

Description

technical field [0001] The invention relates to a deep-water cluster well factory batch drilling and completion equipment and a drilling and completion method, belonging to the technical field of offshore oil and gas drilling and completion. Background technique [0002] my country's dependence on foreign crude oil is increasing year by year, far higher than the international oil safety warning line, and oil and gas supply is facing great challenges. my country is rich in offshore oil and gas resources, especially in the South China Sea, where geological reserves of oil and gas resources reach 23-30 billion tons, known as the "second Persian Gulf", of which 70% of oil and gas resources are stored in deep water areas. Deepwater oil and gas has become an important strategic replacement field for my country's exploration and development. [0003] Drilling and completion is the first step in deepwater oil and gas exploration and development. Due to the special environmental co...

Claims

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Application Information

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IPC IPC(8): E21B7/12E21B7/04E21B15/02E21B15/04E21B47/001E21B49/00E21B21/00
CPCE21B7/12E21B7/04E21B15/02E21B15/04E21B49/00E21B21/00
Inventor 张伟国孙宝江郭永宾金颢张剑波李波王志远杜庆杰曹波波李勇高永海李昊覃建宇张永涛陈彬
Owner CNOOC TIANJIN BRANCH