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Industrial fracturing reconstruction method for oil and gas wells

A factory-like technology for oil and gas wells, applied in earthwork drilling, wellbore/well components, production fluids, etc. It can solve the problems of long downtime of key equipment, large amount of proppant preparation, and long construction time, etc., and achieve shortening Construction reconstruction time and completion period, improvement of construction efficiency and construction benefits, and the effect of improving construction technology content

Active Publication Date: 2017-02-08
CHINA NAT PETROLEUM CORP CHUANQING DRILLING ENG CO LTD CHANGQING DOWNHOLE TECH CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of large-scale fracturing of horizontal wells, there are many preparations of liquid and proppant, complex process, high risk of well control, difficult organization, long construction time, many equipments, long downtime of key equipment, etc. low, the overall construction progress is slow, the quality is poor, and there are many potential safety hazards. The present invention provides a method for industrial fracturing reconstruction of oil and gas wells, covering all stages of large-scale fracturing reconstruction of horizontal wells, involving well site layout, Construction procedures, optimized combination of equipment, storage, configuration and recovery of construction liquids, etc.

Method used

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  • Industrial fracturing reconstruction method for oil and gas wells
  • Industrial fracturing reconstruction method for oil and gas wells

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Comparison scheme
Effect test

Embodiment 1

[0048] An oil well horizontal well factory fracturing method, such as image 3 As shown, hydraulic jet staged fracturing or PSK multi-stage hydraulic jet fracturing technology is used for construction. The wellsite layout adopts the factory-based wellsite layout, which is arranged in five functional areas: liquid storage, sand storage, mixing, fracturing, and recovery.

[0049] In the construction preparation stage, an independent operation team will use the 250 workover rig to complete all the well-cleaning and three-sample procedures at one time before the oil testing unit is in place. The three-sample measurement includes measuring "sonic amplitude" and "gamma". "Radioactivity" and "magnetic positioning". After the design plan is in place, relocate the oil test unit for construction.

[0050] For the distribution of construction materials, the well site is used to set up material storage points, and materials such as guar gum powder, liquid additives, ceramsite, quartz sand, et...

Embodiment 2

[0063] A method for factory fracturing of horizontal wells in gas wells, such as Figure 4 As shown, hydraulic jet staged fracturing or open-hole packer staged fracturing technology is used for construction. The wellsite layout adopts the factory-based wellsite layout, which is arranged in five functional areas: liquid storage, sand storage, mixing, fracturing, and recovery.

[0064] In the construction preparation phase, an independent operation team will use the 350 workover rig to complete the flushing and pressure testing of all gas wells at one time before the oil testing unit is in place.

[0065] For the distribution of construction materials, the well site is used to set up material storage points, and materials such as guar gum powder, liquid additives, ceramsite, quartz sand, etc. realize the mode of factory distribution and direct supply of large packaging, reducing the intermediate links of inversion and saving logistics Guarantee time.

[0066] The supply of produced w...

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Abstract

The invention provides an oil-gas well factory fracture modification method which includes well field arrangement, construction preparation, fracture construction and liquid discharge / oil pumping test. The method has the advantages that all stages of horizontal well large-scale fracture modification are covered, a 'factory' operation acceleration mode with epochal characteristics such as 'large-scale professional construction, modular organization and production line operation', an efficient and fast factory construction mode is provided for horizontal well pressure modification in thermals construction organization modes, acceleration and efficiency increasing process, and the like, and horizontal well completion amount is increased greatly.

Description

Technical field [0001] The invention belongs to an oil and gas well fracturing construction process mode, and particularly relates to an oil and gas well factory fracturing transformation method. Background technique [0002] Large-scale development of horizontal wells has become an effective measure to increase the production efficiency of single wells and the efficiency of fracturing reconstruction operations. In recent years, with the continuous increase of horizontal wells and continuous improvement of construction technology, the application of horizontal wells to develop low-permeability and ultra-low-permeability oil and gas reservoirs has become a new trend in today’s technology development. Due to the large scale of horizontal well volume fracturing, liquid , The amount of proppant preparation is large, the process is complex, the well control risk is high, the organization is difficult, the construction time is long, the equipment used is many, the key equipment is long...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/26
Inventor 周丰王祖文白明伟韩文哲费节高曹欣陈万林任斌张永红池晓明刘欢郭艳萍高红平徐俊芳宋孝丹
Owner CHINA NAT PETROLEUM CORP CHUANQING DRILLING ENG CO LTD CHANGQING DOWNHOLE TECH CO