Adjusting and controlling design method for water-drive oil reservoir planar flow field

A technology of planar flow field and design method, which is applied in the direction of mining fluid, earthwork drilling, wellbore/well components, etc., to achieve the effects of increasing economic benefits, good application prospects, and improving efficiency and precision

Active Publication Date: 2018-05-18
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

[0003] The purpose of the present invention is to provide a solution to the matching design problem of the velocity field and the saturation field in the control

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  • Adjusting and controlling design method for water-drive oil reservoir planar flow field
  • Adjusting and controlling design method for water-drive oil reservoir planar flow field
  • Adjusting and controlling design method for water-drive oil reservoir planar flow field

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Embodiment Construction

[0039] In order to make the above and other objects, features and advantages of the present invention more comprehensible, the preferred embodiments are listed below and shown in the accompanying drawings in detail as follows.

[0040] Such as figure 1 as shown, figure 1 It is a flow chart of the method for regulating and designing the planar flow field of the water drive reservoir of the present invention.

[0041] Step 101, determine the horizon, well pattern, and oil-water boundary position of the target research block, divide the research period into several stages according to the change of the well pattern, and use the monthly or quarterly average for the liquid volume of water injection wells and oil production wells in each stage Quantities to carry out flow field analysis for each stage separately.

[0042] Step 102, analyze one of the stages, and describe the oil-water boundary line according to the geological conditions and reservoir dynamics. The initial state of...

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Abstract

The invention provides an adjusting and controlling design method for a water-drive oil reservoir planar flow field. The adjusting and controlling design method comprises the steps that 1, oil-water boundary flow field analyzing is conducted, and distributing of a pressure field and a velocity field of single-phase flow under the conditions that a well network is fixed and the amount of injectionproduction is stable is calculated; 2, an oil-water boundary and a production well near well flow boundary are discretized, and the ideal velocity vector and the actual velocity vector for obtaining the discrete position are calculated; 3, an evaluation coefficient is obtained, and the differences between the ideal velocities of a boundary flow field and a single well flow and the actual velocities are calculated correspondingly; 4, whether the adjusted evaluation coefficient meets the expected value or not is judged, and when the evaluation coefficient meets the expected value, the procedureenters into the step 5; and 5, the optimal well network and injection production adjusting and controlling design scheme is obtained according to the result of the evaluation coefficient. According tothe adjusting and controlling design method for the water-drive oil reservoir planar flow field, whether a current flow field meets needs of distributing of an oil reservoir or single-well oil and water or not can be evaluated quickly and quantificationally, and a basis is provided for formulating a reasonable flow field adjusting and controlling strategy.

Description

technical field [0001] The invention relates to the technical field of oilfield development, in particular to a method for controlling and designing the planar flow field of a water drive oil reservoir. Background technique [0002] Water flooding is currently the oilfield development method with the widest application range, the most mature technology and the best benefits. At present, medium and high permeability reservoirs have generally entered the period of high water cut and ultra-high water cut, and the sharp increase of liquid volume and water volume has become the main contradiction restricting the development effect. In the era of low oil prices, restricted by benefit factors, the traditional and extensive new well development model is unsustainable. Thus, methods of improving the utilization efficiency of existing oil and water wells can realize increased benefits. After years of exploration, flow field control methods have become the consensus of production man...

Claims

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Application Information

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IPC IPC(8): E21B43/20
CPCE21B43/20
Inventor 杨勇卜亚辉王建张世明刘维霞吴义志王瑞薛玉荣宋志超李文静宋力孙宁宁李晓军玄建杨姝
Owner CHINA PETROLEUM & CHEM CORP
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