CN101994506A - Equidistant lines based method for automatically dividing well rows - Google Patents
Equidistant lines based method for automatically dividing well rows Download PDFInfo
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- CN101994506A CN101994506A CN2010105166433A CN201010516643A CN101994506A CN 101994506 A CN101994506 A CN 101994506A CN 2010105166433 A CN2010105166433 A CN 2010105166433A CN 201010516643 A CN201010516643 A CN 201010516643A CN 101994506 A CN101994506 A CN 101994506A
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Abstract
The invention provides an equidistant lines based method for automatically dividing well rows, which comprises the following steps of: firstly, rotating a well location coordinate of a well in a region, and transforming an original well location coordinate into a new coordinate ensuring that well row axial lines are kept horizontal; secondly, setting the number N of rows which are divided in advance, setting the size of a gap between every two rows, longitudinally dividing the region into a plurality of sub-regions from top down by using the equidistant lines, and calculating the number of the wells of each sub-region; thirdly, counting the first N sub-regions with the most wells, solving N horizontal center lines by utilizing a well location vertical coordinate average value of all wells in the sub-region, and determining (N-1) well row dividing lines from a middle position of every two horizontal center lines; and fourthly, arranging rows for each well according to the well location coordinate to obtain a dividing result. The invention can match the automation of a functional module of each part in an oil layer sedimentary facies recognition system and eliminate the triviality and the inconvenience caused by arranging the rows with hands.
Description
Technical field
What the present invention relates to is well array division methods in a kind of oil field development.
Background technology
Along with the encryption exploitation in oil field, well spacing density continues to increase.The distribution of new well need to be considered the connected relation contrast of oil reservoir between well, and a bite well to carry out the contrast of oil reservoir connected relation with which well be exactly left and right sides offset well decision after being divided by well array.Distribute from present well pattern, although the many nets of well are close, basically still by rows arrangement, comparison rule, the numbering of well also are by the well-regulated numbering of the order of well array, meet the actual conditions of oil field development work.Therefore, dividing well array is to do necessary preparation for the connection contrast between identification of oil reservoir sedimentary facies and well.Briefly, divide well array and be exactly after clear and definite survey region, the oil well in this zone is drawn section, make all wells in this zone become several orderly subregions by rows with.Could clear and definite oil reservoir sedimentary facies identify and be communicated with the order of contrast like this, and be to draw this regional clear and definite structure of sedimentary facies belt figure.The well that belongs to same row is done the connection contrast by order and adjacent well in the row, determines connected relation.At last, according to parameters such as pound sign, little level number, well row numbers, utilize existing substratum information and judge good connected relation, draw out corresponding sedimentary facies belt figure.
Summary of the invention
The object of the present invention is to provide a kind of automatic well array division methods that can carry out the automatic well array division of computer to the oil well in the zone that has azimuthal coordinates based on equal space line.
Step 1 is rotated the well location coordinate of well in the zone, original well location coordinate transform is become to make the new coordinate of well array axis maintenance level; Step 2 is set the pre-row N that divides, and the size of spacing between rows is set, and with equal space line described zone vertically is divided into several subregions from top to bottom, adds up the well number of every sub regions; Step 3, the maximum subregion of statistics top n well number, and utilize the well location ordinate average of all wells of this subregion to obtain N bar horizontal center line, half location positioning by per two horizontal center lines goes out N-1 bar well array dividing line again; Step 4 is returned row with every a bite well by the well location coordinate, obtains dividing the result.
The present invention is in order to cooperate the automation of each several part functional module in the oil reservoir sedimentary facies recognition system, also is in order to solve the loaded down with trivial details and inconvenient of the manual row of drawing, and proposed a kind of method of the automatic division well array based on equal space line.The main feature of technical scheme of the present invention is: at first, selected zone to be studied is rotated the well location coordinate of this regional well.In general, during the well pattern distribution map that is reduced into by the well location coordinate of reality, well array might tilt.That is to say angle is arranged through the axis and the level of well array.The preparation of this method before dividing well array is exactly the new coordinate that original well location coordinate transform is become to make well array axis maintenance level.Secondly, set the pre-row who divides and count N, the size of the row's of setting interbody spacer should vertically be divided into plurality of sub-regions in the zone from top to bottom with equal space line, add up the well number of each subregion.Again, the maximum subregion of statistics top n well number, and utilize the well location ordinate average of all wells of this subregion to obtain N bar horizontal center line, half location positioning by per two horizontal center lines goes out N-1 bar well array dividing line again.At last, each mouthful well is returned row by the well location coordinate, obtain dividing the result.
Description of drawings
Accompanying drawing is the flow chart of the automatic well array division methods based on equal space line of the present invention.
The specific embodiment
For example the present invention is done more detailed description below in conjunction with accompanying drawing:
At first preparation is included in the zone of selected desire research in whole district's well location map, determines that simultaneously the row that desire is divided counts N.
The specific implementation step of well array division methods proposed by the invention is as follows:
Step 1, in order to eliminate the angle of well array axis and level, selected anglec of rotation is rotated the well location coordinate of all wells, makes well array axis maintenance level.
Step 2 arranges the size of spacer segment, and the zone of wish being divided well array vertically is divided into equidistant n section (n is greater than the row N that wish is divided), and equal space line is divided into the n sub regions with this zone.
Step 3, the oil well number of adding up each subregion, and, select the bigger top n subregion of contained well number by descending rank order.
Step 4 to N selected subregion, utilizes the ordinate average of all wells in the subregion to try to achieve the position of the horizontal center line of each subregion.
Step 5 is utilized N bar horizontal center line, obtains the position of the well array cut-off rule of (N-1) bar level, and method is vertical median point position of corresponding per two horizontal center lines in position of well array cut-off rule.
Step 6, (N-1) the bar well array cut-off rule zone that will select wish research is divided into the N piece by horizontal direction, and every mouthful of well is returned row by the position that its ordinate drops on.
Claims (1)
1. automatic well array division methods based on equal space line is characterized in that: step 1, the well location coordinate of the well in the zone is rotated, and original well location coordinate transform is become to make the new coordinate of well array axis maintenance level; Step 2 is set the pre-row N that divides, and the size of spacing between rows is set, and with equal space line described zone vertically is divided into several subregions from top to bottom, adds up the well number of every sub regions; Step 3, the maximum subregion of statistics top n well number, and utilize the well location ordinate average of all wells of this subregion to obtain N bar horizontal center line, half location positioning by per two horizontal center lines goes out N-1 bar well array dividing line again; Step 4 is returned row with every a bite well by the well location coordinate, obtains dividing the result.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105166433A CN101994506A (en) | 2010-10-25 | 2010-10-25 | Equidistant lines based method for automatically dividing well rows |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010105166433A CN101994506A (en) | 2010-10-25 | 2010-10-25 | Equidistant lines based method for automatically dividing well rows |
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| CN101994506A true CN101994506A (en) | 2011-03-30 |
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| CN2010105166433A Pending CN101994506A (en) | 2010-10-25 | 2010-10-25 | Equidistant lines based method for automatically dividing well rows |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102839958A (en) * | 2012-09-04 | 2012-12-26 | 中国石油天然气股份有限公司 | Longitudinally-superposed-development three-layer-system oil reservoir well pattern and deployment method thereof |
| CN102839959A (en) * | 2012-09-04 | 2012-12-26 | 中国石油天然气股份有限公司 | Longitudinally-superposed-development two-layer-system oil reservoir well pattern and deployment method thereof |
| CN104695934A (en) * | 2013-12-06 | 2015-06-10 | 中国石油天然气股份有限公司 | Tight sandstone gas reservoir development well pattern optimization method |
-
2010
- 2010-10-25 CN CN2010105166433A patent/CN101994506A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102839958A (en) * | 2012-09-04 | 2012-12-26 | 中国石油天然气股份有限公司 | Longitudinally-superposed-development three-layer-system oil reservoir well pattern and deployment method thereof |
| CN102839959A (en) * | 2012-09-04 | 2012-12-26 | 中国石油天然气股份有限公司 | Longitudinally-superposed-development two-layer-system oil reservoir well pattern and deployment method thereof |
| CN102839959B (en) * | 2012-09-04 | 2015-04-08 | 中国石油天然气股份有限公司 | Two-layer system oil reservoir well pattern deployment method for longitudinal superimposed development |
| CN102839958B (en) * | 2012-09-04 | 2015-07-08 | 中国石油天然气股份有限公司 | Longitudinally-superposed-development three-layer-system oil reservoir well pattern and deployment method thereof |
| CN104695934A (en) * | 2013-12-06 | 2015-06-10 | 中国石油天然气股份有限公司 | Tight sandstone gas reservoir development well pattern optimization method |
| CN104695934B (en) * | 2013-12-06 | 2017-04-12 | 中国石油天然气股份有限公司 | Tight sandstone gas reservoir development well pattern optimization method |
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Application publication date: 20110330 |