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An integrated reservoir reconstruction method for open-hole well completion and sidetracking with sidetracking

A technology for open hole completion and side drilling, which is applied in wellbore/well components, drilling equipment and methods, and production fluids, etc., can solve the problems of complex construction and low efficiency, shorten the construction period, improve construction efficiency, and improve construction efficiency. The effect of simple craftsmanship

Active Publication Date: 2020-08-11
RES INST OF SHAANXI YANCHANG PETROLEUM GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For conventional reservoir stimulation, after the completion of drilling, the drilling string needs to be pulled out, and then the wellbore preparation work such as well scraper, spiral centralizer wellbore repair and simulated fracturing string drilling should be carried out, and then the fracturing string should be lowered. The implementation of perforation and fracturing operations is complex and inefficient

Method used

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  • An integrated reservoir reconstruction method for open-hole well completion and sidetracking with sidetracking
  • An integrated reservoir reconstruction method for open-hole well completion and sidetracking with sidetracking

Examples

Experimental program
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Effect test

Embodiment 1

[0032] An integrated reconstruction method for open hole completion and reservoir formation of windowed sidetracking wells. After the sidetracking wells are completed, in addition to conventional wellhead devices, fracturing trucks, sand mixer trucks, instrument trucks, fracturing manifold trucks, acid tanks and For the liquid storage tank group, the fracturing manifold truck is equipped with low-pressure and high-pressure manifolds, and the instrument truck is equipped with monitoring instruments. The rated working pressure of the wellhead device is determined according to the fracturing construction pressure. Proceed as follows:

[0033] (1) if figure 2 As shown, according to the well depth of the window sidetracking point, the main wellbore 1 is suspended with a cement plug 3 to seal off the lower part of the main wellbore 1, and the upper part of the main wellbore 1 is used as the upper part of the sidetracking wellbore;

[0034] (2) Run the sidetracking BHA at sidetrack...

Embodiment 2

[0045]An integrated reconstruction method for open hole completion and reservoir formation of windowed sidetracking wells. After the sidetracking wells are completed, in addition to conventional wellhead devices, fracturing trucks, sand mixer trucks, instrument trucks, fracturing manifold trucks, acid tanks and For the liquid storage tank group, the fracturing manifold truck is equipped with low-pressure and high-pressure manifolds, and the instrument truck is equipped with monitoring instruments. The rated working pressure of the wellhead device is determined according to the fracturing construction pressure. Proceed as follows:

[0046] (1) if figure 2 As shown, according to the well depth of the window sidetracking point, the main wellbore 1 is suspended with a cement plug 3 to seal off the lower part of the main wellbore 1, and the upper part of the main wellbore 1 is used as the upper part of the sidetracking wellbore;

[0047] (2) Run the sidetracking BHA at sidetracki...

Embodiment 3

[0058] An integrated reconstruction method for open hole completion and reservoir formation of windowed sidetracking wells. After the sidetracking wells are completed, in addition to conventional wellhead devices, fracturing trucks, sand mixer trucks, instrument trucks, fracturing manifold trucks, acid tanks and For the liquid storage tank group, the fracturing manifold truck is equipped with low-pressure and high-pressure manifolds, and the instrument truck is equipped with monitoring instruments. The rated working pressure of the wellhead device is determined according to the fracturing construction pressure. Proceed as follows:

[0059] (1) if figure 2 As shown, according to the well depth of the window sidetracking point, the main wellbore 1 is suspended with a cement plug 3 to seal off the lower part of the main wellbore 1, and the upper part of the main wellbore 1 is used as the upper part of the sidetracking wellbore;

[0060] (2) Run the sidetracking BHA at sidetrack...

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Abstract

The invention belongs to the technical field of drilling well completion reservoir stratum transformation, and discloses a cased hole directional window cutting drilling and barefoot well completion reservoir stratum integrated transformation method. A cased hole directional window cutting drilling, perforation and fracturing integrated technical method is provided, a drill pipe for drilling and awaterpower gun are combined, and drilling, perforation and fracturing integrated work is achieved. According to the method, simplification of a conventional reservoir stratum drilling and fracturingtechnology is achieved, drilling, perforation and fracturing are integrated into the integrated technology, the drill pipe is used as a drilling, perforation and fracturing integrated tubular column,no fracturing oil pipe needs to be prepared on site, perforating and fracturing operation can be implemented after barefoot well completion, multiple tubular column trips are not needed, the construction period is remarkably shortened, the construction process is simple, and the construction efficiency is high. The risk of hole-wall collapsing and the construction difficulty are reduced, and the downhole safety coefficient is obviously improved.

Description

technical field [0001] The invention belongs to the technical field of well drilling and completion reservoir reconstruction, and in particular relates to an integrated reconstruction method for sidetracking sidetracking openhole well completion reservoirs. Background technique [0002] Conventional drilling and fracturing processes are generally implemented in two steps. With the increasing number of low-efficiency wells and project-abandoned wells, in order to tap the potential of oil reservoirs and improve the benefits of oilfield development, in order to make full use of the original wellbore, more and more sidetracked wells are opened, and the sidetracked wells usually use open hole completion technology. For conventional reservoir stimulation, after the completion of drilling, the drilling string needs to be pulled out, and then the wellbore preparation work such as well scraper, spiral centralizer wellbore repair and simulated fracturing string drilling should be carr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B7/00E21B21/00E21B43/116E21B43/26E21B29/06
Inventor 乔红军杨先伦孟选刚于小龙穆景福郭庆梁小兵高志亮张恒马春晓
Owner RES INST OF SHAANXI YANCHANG PETROLEUM GRP