CN104251135A - Highly-deviated well space in-place method - Google Patents
Highly-deviated well space in-place method Download PDFInfo
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- CN104251135A CN104251135A CN201310266132.4A CN201310266132A CN104251135A CN 104251135 A CN104251135 A CN 104251135A CN 201310266132 A CN201310266132 A CN 201310266132A CN 104251135 A CN104251135 A CN 104251135A
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Abstract
The invention provides a highly-deviated well space in-place method. The highly-deviated well space in-place method comprises the steps that whether contradiction exists in an oil, gas and water relation or not is judged; according to a stratigraphic correlation relation, a small-layer top face structural map is made, and whether a structural tendency is reasonable or not is judged; well drilling and well logging hole-deviation correction sand body bushing altitude depths are compared, and whether a difference exists or not is judged; a well required to perform space in-place operation is comprehensively determined, and the depth correction value is determined; the corrected depth is applied to making the small-layer top face structural map, and if the structural tendency is reasonable and no contradiction exists in an oil, gas and water interface, correction is completed. According to the highly-deviated well space in-place method, an effective method which can determine the reasonable space position is provided for a highly-deviated well which affects the development effect and is caused by the position space error caused by well deviation error in the well drilling process. The method has the good operation, creativeness and practicability and facilitates popularization.
Description
Technical field
The present invention relates to oil development geology meticulous pool description research field, particularly relate to a kind of high angle hole spacial migration method.
Background technology
Along with the development of computer technology, geological reservoir research also progressively achieves three-dimensional visualization.By three-dimensional visualization can be more visual and clear understand the true distribution situation of oil well in underground.And along with the progress of drilling technology, the also abundant various well type of application in oil field development, especially the deviated directional drilling of High angle is widely used.The hole deviation data of drilled well is that the hole angle that recorded by the wireless measuring instrument while drilling in drilling process and azimuth are determined, affecting some well and can there is comparatively big error by many factors, thus can affect geological research achievement.Good method was not had in the past to determine its accuracy to the hole deviation data that drilling well provides, if there is comparatively big error will have a huge impact geological research, thus make achievement in research generation deviation, the choice even led to errors, the development effectiveness in oil field can be had influence on when serious.Therefore the hole deviation that drilling well provides is confirmed, the hole deviation that correction error is larger, inclined shaft is rationally playbacked in space aobvious particularly important.
In order to accurate description well track is in the position in space, needs to adopt new method to judge drilling well hole deviation error size, and rationally playback.We have invented for this reason in conjunction with geological research and well-log information high angle hole spacial migration method, solve above technical problem.
Summary of the invention
The invention provides a kind of high angle hole spacial migration method, solve the problem that the hole deviation error that may occur in drilling process causes well track mistake, realize the object rationally playbacked in high angle hole space.
Object of the present invention realizes by following technical measures, high angle hole spacial migration method, this high angle hole spacial migration method comprises: step 1, carries out Strata Comparison and carries out oil gas water interface determining, judge whether oily water-gas relation exists contradiction to drilled well; Step 2, according to stratum comparing result, makes the end face constructional drawing of substratum, sees that whether structure trend is reasonable; Step 3, contrast drilling well and the sand body bushing height above sea level degree of depth of well logging two kinds of hole-deviation corrections, see whether the two has difference; Step 4, for there is the unreasonable and well that drilling well is larger with well logging height above sea level depth disparity of oil gas water contradiction, structure trend, seismic profile being demarcated, comprehensively determines the well that need carry out spacial migration, and determine depth correction amount; And step 5, use the degree of depth after correcting to do substratum end face constructional drawing, if structure trend rationally and oil gas water interface does not have contradiction, then completes correction.
Object of the present invention also realizes by following technical measures:
In step 1, first the hole deviation data provided by drilling well is shown at three dimensions, whether the relativeness of preliminary judgement and surrounding well is reasonable, then Strata Comparison is carried out with around well, according to the correlation marker in this district, accurately divide substratum, for boring the substratum of meeting oil gas water interface, judge that oil gas water interface is whether reasonable, these sand body oil-water interfaces of the oil-water interfaces of every mouthful of well and this substratum whether contradiction.
In step 2, structure is not obviously met to the substratum of total structure trend, substratum plan view marks well location and the oil water relation of this layer, use drilling well hole-deviation correction sand body data to be vertical depth value, and the sand body vertical depth provided contrasts with logging well, and sees whether there is error.
This high angle hole spacial migration method also comprises, and after step 3, the well track of drilling well is loaded in earthquake storehouse, judges that whether drilling depth is wrong by seismic reflection.
In steps of 5, after doing substratum end face constructional drawing, well track after correcting is loaded earthquake storehouse, whether always to see aspect and reflecting interface, if all coincide better, and other substratums do not produce new contradiction, then think that this correcting value is suitable, otherwise re-start step 2 to step 4, continue amendment correcting value, finally make to meet geological knowledge and coincide better with well logging, seismic data, until there is not contradiction in each sand body oil gas water interface, each sand body structure trend is reasonable, and seismic reflection coincide better, and the correcting value determined like this is correction of a final proof amount.
High angle hole spacial migration method in the present invention, technical thought is clear, application is simple, and breaching drilling well hole deviation in the past can not the problem of correct spacial migration, and the present invention is compared with the past has better operability, has novelty, practicality, is beneficial to popularization.Spacial migration for high angle hole provides practicable method.The method obtains application at Shengli Oil Field offshore oil production factory chengdao oilfield main body block, successful correction 17 mouthfuls of problem wells.
Accompanying drawing explanation
Fig. 1 is the flow chart of a specific embodiment of high angle hole spacial migration method of the present invention;
Fig. 2 is Strata Comparison sectional drawing in a specific embodiment of the present invention;
Fig. 3 is the relative space position figure of drilled well in a specific embodiment of the present invention;
Fig. 4 is sand body end face constructional drawing in a specific embodiment of the present invention;
Fig. 5 is the position view of well track in seismic profile in a specific embodiment of the present invention;
Fig. 6 is the track comparison diagram front with correction after correcting in a specific embodiment of the present invention.
Detailed description of the invention
For making above and other object of the present invention, feature and advantage can become apparent, cited below particularly go out preferred embodiment, and coordinate institute's accompanying drawings, be described in detail below.
As shown in Figure 1, Fig. 1 is the flow chart of high angle hole spacial migration method of the present invention.
In step 101, carry out Strata Comparison and carry out oil gas water interface determining to drilled well, judge whether oily water-gas relation exists contradiction.First the hole deviation data provided by drilling well is shown at three dimensions, and whether preliminary judgement is reasonable with the relativeness of surrounding well.Then carrying out Strata Comparison with around well, according to the correlation marker in this district, accurately divide substratum, for boring the substratum of meeting oil gas water interface, judging whether rationally oil gas water interface, these sand body oil-water interfaces of the oil-water interfaces of every mouthful of well and this substratum whether contradiction.In this example 5
6substratum, it is-1455m that 22FA-3 well bores the oil-water interfaces of meeting, and the oil-water interfaces that 22FA-19 well bores chance are-1443m, obviously there is contradiction.Need the spacial migration carrying out well, Fig. 2 is Strata Comparison sectional drawing in a specific embodiment of the present invention, determines whether this well exists the situation of oil gas water contradiction from the techniqueflow chart of Fig. 2, this well 5
6the oil-water interfaces of sand body are the oil-water interfaces-1443m contradiction of-1555m and this sand body.Fig. 3 is the relative space position figure of drilled well in a specific embodiment of the present invention, the hole deviation data provided according to drilling well at three dimensions show this well and around the relation of well.Flow process enters into step 102.
In step 102, according to stratum comparing result, make the end face constructional drawing of substratum, see that whether structure trend is reasonable.Fig. 4 is in a specific embodiment of the present invention 5
6substratum constructional drawing, according to 5
6sand body end face constructional drawing judges that whether general arrangement trend is reasonable.This example can be found out, total structure trend is that Xi Gaodong is low, and does not obviously meet total structure trend at 22FA-3 Jing Chu this layer of structure.Substratum plan view marks well location and the oil water relation of this layer, uses drilling well hole-deviation correction sand body data to be vertical depth value, and contrast with the sand body vertical depth provided of logging well, see whether there is error.Flow process enters into step 103.
In step 103, contrast drilling well and the sand body bushing height above sea level degree of depth of well logging two kinds of hole-deviation corrections, see whether the two has difference.Contrast finds that drilling well height above sea level depth ratio is logged well dark 5m, and this illustrates that hole deviation likely has problems.Flow process enters into step 104.
In step 104, the well track of drilling well is loaded in earthquake storehouse, judges that whether drilling depth is wrong by seismic reflection.This example can find out 5
6it is mild that sand body grows structure, there is not structure local acute variation.And be starkly lower than seismic reflection week according to the structure end face that drilling well is determined, therefore this well needs to correct drilling well hole deviation.Fig. 5 is the position view of well track in seismic profile in a specific embodiment of the present invention, the well track of drilling well is loaded in earthquake storehouse, judge that whether the degree of depth is wrong by seismic reflection, seismic profile is obviously found out 56 sand bodies of 22FA-3 well are lower than 26B-5 well.Flow process enters into step 105.
In step 105, for there is the unreasonable and well that drilling well is larger with well logging height above sea level depth disparity of oil gas water contradiction, structure trend, seismic profile being demarcated, comprehensively determines the well that need carry out spacial migration, and determine depth correction amount; The degree of depth after correcting is used to do substratum end face constructional drawing, if structure trend rationally and oil gas water interface does not have contradiction, then completes correction.In one embodiment, comprehensive descision, determines correcting value, tentatively judges that depth correction amount is as+12m according to this layer of oil-water interfaces, after using this correcting value to correct drilling well hole deviation, again does this sand body end face constructional drawing, sees that whether structure trend is reasonable; And the well track after correcting is loaded earthquake storehouse, whether always to see aspect and reflecting interface, if all coincide better, and other substratums do not produce new contradiction, then think that this correcting value is suitable, otherwise re-start flow process 102 ~ 105, continue amendment correcting value, finally make to meet geological knowledge and coincide better with well logging, seismic data.Until each sand body oil gas water interface does not exist contradiction, each sand body structure trend is reasonable, and seismic reflection coincide better, and the correcting value determined like this is correction of a final proof amount.Fig. 6 is the track comparison diagram front with correction after correcting in a specific embodiment of the present invention, determine that this well correcting value is-11m, oil-water interfaces after correction are consistent with total interface of this sand body, the Strata Comparison section done after correction, and oil-water interfaces are unified is-1443m.
Claims (5)
1. high angle hole spacial migration method, is characterized in that, this high angle hole spacial migration method comprises:
Step 1, carries out Strata Comparison and carries out oil gas water interface determining to drilled well, judge whether oily water-gas relation exists contradiction;
Step 2, according to stratum comparing result, makes the end face constructional drawing of substratum, sees that whether structure trend is reasonable;
Step 3, contrast drilling well and the sand body bushing height above sea level degree of depth of well logging two kinds of hole-deviation corrections, see whether the two has difference;
Step 4, for there is the unreasonable and well that drilling well is larger with well logging height above sea level depth disparity of oil gas water contradiction, structure trend, seismic profile being demarcated, comprehensively determines the well that need carry out spacial migration, and determine depth correction amount; And
Step 5, uses the degree of depth after correcting to do substratum end face constructional drawing, if structure trend rationally and oil gas water interface does not have contradiction, then completes correction.
2. high angle hole spacial migration method according to claim 1, it is characterized in that, in step 1, the hole deviation data first provided by drilling well is shown at three dimensions, and whether preliminary judgement is reasonable with the relativeness of surrounding well, then Strata Comparison is carried out with around well, according to the correlation marker in this district, accurately divide substratum, for boring the substratum of meeting oil gas water interface, judge that oil gas water interface is whether reasonable, these sand body oil-water interfaces of the oil-water interfaces of every mouthful of well and this substratum whether contradiction.
3. high angle hole spacial migration method according to claim 1, it is characterized in that, in step 2, structure is not obviously met to the substratum of total structure trend, substratum plan view marks well location and the oil water relation of this layer, use drilling well hole-deviation correction sand body data to be vertical depth value, and contrast with the sand body vertical depth provided of logging well, see whether there is error.
4. high angle hole spacial migration method according to claim 1, is characterized in that, this high angle hole spacial migration method also comprises, and after step 3, the well track of drilling well is loaded in earthquake storehouse, judges that whether drilling depth is wrong by seismic reflection.
5. high angle hole spacial migration method according to claim 1, it is characterized in that, in steps of 5, after doing substratum end face constructional drawing, well track after correcting is loaded earthquake storehouse, whether always to see aspect and reflecting interface, if all coincide better, and other substratums do not produce new contradiction, then think that this correcting value is suitable, otherwise re-start step 2 to step 4, continue amendment correcting value, finally make to meet geological knowledge and with well logging, seismic data coincide better, until there is not contradiction in each sand body oil gas water interface, each sand body structure trend is reasonable, seismic reflection coincide better, the correcting value determined like this is correction of a final proof amount.
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| CN105064990A (en) * | 2015-08-18 | 2015-11-18 | 西南石油大学 | Structure modeling method by means of horizontal well three-dimensional visualization stratigraphic correlation |
| CN105089658A (en) * | 2015-07-01 | 2015-11-25 | 中国石油天然气股份有限公司 | Stratigraphic correlation method and device based on uncertainty |
| CN106294915A (en) * | 2015-06-04 | 2017-01-04 | 中国石油化工股份有限公司 | Beach shallow sea oil field based on well group platform development well location method for designing |
| CN110485992A (en) * | 2018-05-14 | 2019-11-22 | 中国石油化工股份有限公司 | One kind being drilled well Ascending Velocity For Oil & Gas calculation method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106294915A (en) * | 2015-06-04 | 2017-01-04 | 中国石油化工股份有限公司 | Beach shallow sea oil field based on well group platform development well location method for designing |
| CN105089658A (en) * | 2015-07-01 | 2015-11-25 | 中国石油天然气股份有限公司 | Stratigraphic correlation method and device based on uncertainty |
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| CN110485992A (en) * | 2018-05-14 | 2019-11-22 | 中国石油化工股份有限公司 | One kind being drilled well Ascending Velocity For Oil & Gas calculation method |
| CN110485992B (en) * | 2018-05-14 | 2021-11-26 | 中国石油化工股份有限公司 | Method for calculating oil gas channeling speed for well drilling and completion |
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