HAFD segmented optimization method and system

A technology for fracturing acidification and optimization methods, which is applied to earth-moving drilling, wellbore/well components, and production fluids.

Inactive Publication Date: 2015-01-28
BEIJING GOODLUCK PETROLEUM TECH CO LTD
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Problems solved by technology

[0010] In order to solve the problem of difficult quantification in the existing horizontal well optimal staged acidizing design, the present invention proposes an ingenious, reasonable, simple operation and low cost, which can realize acidizing and acid fracturing pr

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  • HAFD segmented optimization method and system
  • HAFD segmented optimization method and system
  • HAFD segmented optimization method and system

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Embodiment Construction

[0044] The method for optimizing the fracture acidification stage of HAFD horizontal well of the present invention includes the following steps:

[0045] S010. Using carbonate horizontal well segmented matrix acidification model to simulate the acidification process of horizontal well segmented matrix; specifically combining the physical property changes on the wellbore trajectory, liquid interface movement, acid fluid rheology and steering changes, acid rock reaction The impact of performance, pumping procedure and displacement, simulation of the acid flow in the wellbore and formation and the extension process of acid-etched wormholes, quantitatively analyze the acid diversion characteristics of horizontal wells under different segment conditions, and predict the depth of the pollution zone , Wormhole penetration depth, acidification skin coefficient, acid absorption index distribution and other profiles.

[0046] S020. Using carbonate horizontal well segmented matrix acidificati...

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Abstract

The invention relates to an HAFD (Horizontal-well Acid Fracturing) segmented optimization method and system. The optimization method comprises the following optimization flow: simulating a horizontal well segmented matrix acidization, predicting acidizing capacity for forming the horizontal well segmented matrix, predicting the capacity of the segmented acid fracturing horizontal well, optimizing segmented acidizing and acid fracturing for the horizontal well, realizing digitalization of well logging drawings, and combining the segmented matrix acidizing technology with the acid fracturing technology. The optimization system comprises a basic data subsystem, a log data subsystem, a well bore configuration definition subsystem, an acidizing simulation subsystem and a prediction evaluation subsystem. The optimization method disclosed by the invention is ingenious and reasonable in conception, simple in steps, and capable of avoiding the problems that the carbonatite reaction kinetic model is complicated and difficult to apply and estimating the acid absorption content of the stratum segment more accurately. The optimization system disclosed by the invention is simple and reasonable in structure, and capable of realizing integrated design process of the parameter design of the acidizing and acid fracturing technologies, effect prediction and economic evaluation, and brings convenience for field engineers to carry out optimization design on the acidizing scheme.

Description

Technical field [0001] The invention relates to the technical field of petroleum exploration and development, in particular to a method and system for optimizing the fracture acidification stage of a HAFD horizontal well. Background technique [0002] In view of the staged matrix acidification and acid fracturing technology of carbonate horizontal wells, based on the research of horizontal well acid distribution model, horizontal well fracturing horizontal well productivity model and economic evaluation method, the formation of carbonate rock horizontal well staged acidification and segmentation The acid fracturing optimization design software realizes the integrated design process of acidification and acid fracturing process parameter design, effect prediction and economic evaluation. [0003] Drilling horizontal wells can increase the contact area of ​​the reservoir, achieve high production, and alleviate water cones. Acidification is an economical and effective way to increase t...

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Application Information

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IPC IPC(8): E21B43/27
CPCE21B43/26E21B41/0092
Inventor 李国庆
Owner BEIJING GOODLUCK PETROLEUM TECH CO LTD
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