Method and device for forecasting reservoir yield

A prediction method and reservoir technology, applied in the field of petroleum geological exploration, can solve problems such as large errors in prediction methods, and achieve the effect of improving accuracy

Inactive Publication Date: 2010-12-08
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The main purpose of the embodiments of the present invention is to provide a method and device for predicting reservoir

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  • Method and device for forecasting reservoir yield
  • Method and device for forecasting reservoir yield
  • Method and device for forecasting reservoir yield

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Example Embodiment

[0031] Example one

[0032] The embodiment of the present invention provides a method for predicting reservoir productivity, such as figure 1 As shown, the method includes:

[0033] Step 101: Obtain formation parameters including formation pressure and mobility according to the formation and fluid property information obtained by the cable formation tester;

[0034] Step 102: Obtain wellhead pressure and bottom hole flow pressure according to the flow process of fluid from the bottom of the well to the wellhead;

[0035] Step 103: Generate natural bottom hole fluid production based on formation parameters, skin coefficient, bottom hole flow pressure, and conventional logging information including oil well oil supply radius, well bore radius, effective formation thickness, and fluid volume factor;

[0036] Step 104: Acquire fluid parameters including gas-oil ratio and fluid density according to the fluid property information;

[0037] Step 105: Generate wellhead fluid production accordin...

Example Embodiment

[0059] Example two

[0060] The embodiment of the present invention also provides a device for predicting reservoir productivity, which is preferably used to implement the above method. Such as image 3 As shown, the device includes:

[0061] The formation parameter acquisition unit 301 is configured to acquire formation parameters including formation pressure and mobility according to the formation and fluid property information acquired by the cable formation tester;

[0062] The wellhead bottom hole pressure obtaining unit 302 is used to obtain wellhead pressure and bottom hole flowing pressure according to the flow process of fluid from the bottom of the well to the wellhead;

[0063] The bottom hole fluid natural production generation unit 303 is used to generate bottom hole fluid according to formation parameters, skin coefficient, bottom hole flow pressure, and conventional logging information including oil well oil supply radius, wellbore radius, effective formation thickness,...

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Abstract

The invention provides a method and a device for forecasting reservoir yield, wherein the method comprises the following steps of: acquiring stratum parameters including stratum pressure and fluidity according to the stratum and fluid property information which is acquired by using a cable type stratum tester; acquiring well head pressure and well bottom flowing pressure according to the flowing process of a fluid from a well bottom to a well head; generating the natural yield of a well bottom fluid according to the stratum parameters, skin coefficients, the well bottom flowing pressure and conventional well logging information comprising the oil supply radius and the well bore radius of an oil well, the effective thickness of a stratum and the volume coefficient of the fluid; acquiring fluid parameters comprising a gas-oil ratio and a fluid density according to fluid property information; generating the yield of a well head fluid according to the well head pressure, the well bottom flowing pressure and the fluid parameters; acquiring a well head optimum coordination capacity according to the natural yield of the well bottom fluid and the yield of the well head fluid; and forecasting the reservoir yield according to the well head optimum coordination capacity. By using the invention, the forecasting precision of the reservoir yield can be greatly improved.

Description

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Claims

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Application Information

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Owner PETROCHINA CO LTD
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