CN104314560A - Non-equal proportion stratum comparison method and device before horizontal well window entering - Google Patents
Non-equal proportion stratum comparison method and device before horizontal well window entering Download PDFInfo
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- CN104314560A CN104314560A CN201410424313.XA CN201410424313A CN104314560A CN 104314560 A CN104314560 A CN 104314560A CN 201410424313 A CN201410424313 A CN 201410424313A CN 104314560 A CN104314560 A CN 104314560A
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
- E21B7/06—Deflecting the direction of boreholes
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Abstract
The invention discloses a method and a device for comparing non-equal-proportion stratums before horizontal wells enter a window, wherein the method comprises the following steps: calculating the proportion of a forward drilling logging contrast profile according to the collected adjacent drilled vertical well logging contrast profile, the data of the forward drilling horizontal well logging while drilling, well deviation data and formation inclination data, printing the logging contrast profile corrected to be vertical depth of the forward drilling horizontal well tracking while drilling according to the proportion of the forward drilling logging contrast profile, comparing with the adjacent drilled vertical well logging contrast profile, and comparing with the original design of the forward drilling horizontal well according to the contrast result so as to control the window entry well deviation angle; the comparison device comprises a collection module, a calculation module and a comparison module. The method and the device realize accurate judgment of the drilled horizon and prediction of the window entry point, so that the horizontal well can smoothly drill into an oil layer.
Description
Technical field
The present invention relates to horizontal well enter window before Strata Comparison field, particularly a kind of horizontal well enters the non-equal proportion Strata Comparison method before window.
Background technology
Horizontal well accurately enters window for guaranteeing in implementation process, early stage, Strata Comparison was most important, before needing to enter window according to horizontal well, the reality of inclination section bores situation, well logging and well logging during (LWD) data and surrounding fixed well data is utilized to carry out careful contrast, judge the degree of depth and the reservoir change of target zone covering reference lamina, and then the gap of the accurately predicting horizontal well target zone degree of depth and the positive horizontal well drilling original design degree of depth, thus carry out trajectory of horizontal adjustment in time.
In Strata Comparison process before horizontal well enters window, traditional control methods is by behind oblique dark school to vertical depth, contrasts with same ratio and adjacent drilling straight-hole.When well track passes through parallel occurrence stratum, the formation thickness that track passes through equals the actual (real) thickness on stratum, and this control methods is applicable.But when there is certain inclination angle on stratum, this control methods will cause certain error.When horizontal well angle buildup interval well track pass through have a down dip occurrence stratum time, be greater than the actual (real) thickness on stratum according to the formation thickness that equal proportion school is oblique; When well track passes through updip occurrence stratum, being less than the actual (real) thickness on stratum according to the formation thickness that equal proportion school is oblique, producing deviation to boring the understanding reaching target zone.
Summary of the invention
In order to overcome the above-mentioned deficiency of existing control methods, well of improving the standard enters the contrast precision before window, formation variation feature before Accurate Prediction discrepancy window, to carry out track adjustment in time, make horizontal well enter window smoothly, the invention provides a kind of horizontal well and enter the non-equal proportion Strata Comparison method before window and compare device.
For achieving the above object, the technical solution used in the present invention is:
A kind of horizontal well enters the non-equal proportion Strata Comparison method before window, according to the adjacent well logging of the drilling straight-hole contrast section collected, positive horizontal well drilling well logging during data, hole deviation data and stratigraphic dip data, calculate and just boring well logging contrast section ratio, the well logging after vertical depth that is corrected into printing positive horizontal well drilling drilling tracking in described well logging contrast section ratio of just boring contrasts section, log well with adjacent drilling straight-hole and contrast section and contrast, contrast according to comparing result and positive horizontal well drilling original design, thus control into window hole angle.
Above-mentioned a kind of horizontal well enters the non-equal proportion Strata Comparison method before window, and concrete grammar is:
Step 1: collect adjacent drilling straight-hole well logging contrast section, the adjacent well logging of drilling straight-hole contrast section ratio is K
1;
Step 2: collect positive horizontal well drilling well logging during data, hole deviation data, the hole angle that can read any position is β;
Step 3: collect stratigraphic dip α, and judge pendage type;
Step 4: when attitude of stratum is for having a down dip for horizontal well path, planned well through stratum vertical depth H and adjacent drilling straight-hole through stratum degree of depth h differ △ h, the relation of formula (1) is there is between H and h, namely when planned well enters with β angle the stratum that inclination angle is α, through the vertical depth on stratum and the adjacent drilling straight-hole ratio through depth of stratum, if this ratio is λ;
λ is calculated, the adjacent well logging of drilling straight-hole contrast section ratio K according to formula (1)
1a positive drilling well well logging contrast section ratio K is calculated again divided by λ
2;
Attitude of stratum is when tilting for horizontal well path updip, adjacent drilling straight-hole through stratum degree of depth h and planned well through stratum vertical depth H differ △ h, the relation of formula (2) is there is between H and h, namely when planned well enters with β angle the stratum that inclination angle is α, through the vertical depth on stratum and the adjacent drilling straight-hole ratio through depth of stratum, if this ratio is λ;
λ is calculated, the adjacent well logging of drilling straight-hole contrast section ratio K according to formula (2)
1a positive drilling well well logging contrast section ratio K is calculated again divided by λ
2;
Step 5: in described positive drilling well well logging contrast section ratio K
2what print positive horizontal well drilling drilling tracking is corrected into the contrast of the well logging after vertical depth section, and is K with ratio
1adjacent drilling straight-hole well logging contrast section contrast, contrast according to comparing result and positive horizontal well drilling original design, thus control the hole angle into window.
Above-mentioned a kind of horizontal well enters the non-equal proportion Strata Comparison method before window, and the hole angle method that described control enters window is: when judging to be greater than positive horizontal well drilling original design distance into window distance, reducing hole angle and creeping into compared with positive horizontal well drilling original design; When judging to be less than positive horizontal well drilling original design distance into window distance, increasing hole angle and creeping into compared with positive horizontal well drilling original design; When judging into window distance with positive horizontal well drilling original design, apart from time consistent, can to continue to creep into according to positive horizontal well drilling original design.
Horizontal well enters the non-equal proportion Strata Comparison device before window, comprising:
Collection module, for the adjacent well logging of the drilling straight-hole contrast section collected, positive horizontal well drilling well logging during data, hole deviation data and stratigraphic dip data;
Computing module, for collecting data according to collection module, calculating and just boring well logging contrast section ratio;
Comparison module, the well logging after vertical depth that is corrected into for printing positive horizontal well drilling drilling tracking in described well logging contrast section ratio of just boring contrasts section, log well with adjacent drilling straight-hole and contrast section and contrast, contrast according to comparing result and positive horizontal well drilling original design, thus control into window hole angle.
Above-mentioned a kind of horizontal well enters the non-equal proportion Strata Comparison device before window, specifically comprises:
Collection module, is further used for collecting adjacent drilling straight-hole well logging contrast section, and the adjacent well logging of drilling straight-hole contrast section ratio is K
1; Collect positive horizontal well drilling well logging during data, hole deviation data, the hole angle that can read any position is β; Collect stratigraphic dip α, and judge pendage type;
Computing module, when being further used for attitude of stratum for having a down dip for horizontal well path, planned well through stratum vertical depth H and adjacent drilling straight-hole through stratum degree of depth h differ △ h, the relation of formula (1) is there is between H and h, namely when planned well enters with β angle the stratum that inclination angle is α, through the vertical depth on stratum and the adjacent drilling straight-hole ratio through depth of stratum, if this ratio is λ;
λ is calculated, the adjacent well logging of drilling straight-hole contrast section ratio K according to formula (1)
1a positive drilling well well logging contrast section ratio K is calculated again divided by λ
2;
Attitude of stratum is when tilting for horizontal well path updip, adjacent drilling straight-hole through stratum degree of depth h and planned well through stratum vertical depth H differ △ h, the relation of formula (2) is there is between H and h, namely when planned well enters with β angle the stratum that inclination angle is α, through the vertical depth on stratum and the adjacent drilling straight-hole ratio through depth of stratum, if this ratio is λ;
λ is calculated, the adjacent well logging of drilling straight-hole contrast section ratio K according to formula (2)
1a positive drilling well well logging contrast section ratio K is calculated again divided by λ
2;
Comparison module, is further used in described positive drilling well well logging contrast section ratio K
2what print positive horizontal well drilling drilling tracking is corrected into the contrast of the well logging after vertical depth section, and is K with ratio
1adjacent drilling straight-hole well logging contrast section contrast, contrast according to comparing result and positive horizontal well drilling original design, thus control the hole angle into window.
Above-mentioned a kind of horizontal well enters the non-equal proportion Strata Comparison device before window, described comparison module, is further used for, when judging to be greater than positive horizontal well drilling original design distance into window distance, reducing hole angle and creep into compared with positive horizontal well drilling original design; When judging to be less than positive horizontal well drilling original design distance into window distance, increasing hole angle and creeping into compared with positive horizontal well drilling original design; When judging into window distance with positive horizontal well drilling original design, apart from time consistent, can to continue to creep into according to positive horizontal well drilling original design.
Horizontal well provided by the invention enters the non-equal proportion Strata Comparison method before window, the relation of well track before window is entered by research attitude of stratum and horizontal well, utilize mathematical principle, the proportionate relationship that before calculated level well enters window, well track and adjacent drilling straight-hole can contrast, accurate judgement has been bored and has been reached layer position, predict into window point, Guidance Levels well accurately enters window, solve tilted stratum horizontal well drilling drilling strata situation and judge difficult problem, formation variation situation can be judged early, timely adjustment wellbore trace, lays a solid foundation for horizontal well enters window smoothly.
Accompanying drawing explanation
To be attitude of stratum that the embodiment of the present invention provides be Fig. 1 for horizontal well path has a down dip the relativity schematic diagram of inclined shaft and straight well in tilted stratum.
Fig. 2 relativity schematic diagram that to be attitude of stratum that the embodiment of the present invention provides be for inclined shaft and straight well in horizontal well path updip tilted stratum.
Detailed description of the invention
Field conduct success rate of the present invention is high, implements 6 mouthfuls of water horizontal wells, enters window success rate 100%.Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail:
As shown in Figure 1, with having a down dip, stratum is specifically described, when stratigraphic dip is α, when planned well hole angle is β, planned well through stratum vertical depth H and adjacent drilling straight-hole through stratum degree of depth h differ △ h, there is the relation of formula (1) between H and h, namely when planned well enters with β angle the stratum that inclination angle is α, through the vertical depth on stratum and the straight well ratio through depth of stratum, if this ratio is λ.
For tilted stratum, when contrasting with adjacent drilling straight-hole, for ensureing the integrality on accuracy and the stratum contrasted, after positive drilling well should being corrected into vertical depth, the adjacent well logging of drilling straight-hole contrast section ratio K
1a positive drilling well well logging contrast section ratio K is calculated again divided by λ
2, proportionally K
2printing well logging contrast section and ratio be K
1adjacent drilling straight-hole well logging contrast section contrast.
Step 1: collect adjacent drilling straight-hole well logging contrast section, the adjacent well logging of drilling straight-hole contrast section ratio is K
1.
Step: 2: collect positive horizontal well drilling well logging during data, hole deviation data, the hole angle that can read contrast position is β.
Step 3: the inclination alpha of collecting contrast stratum, and judges pendage type, as Fig. 1, to be attitude of stratum be to have a down dip inclination for horizontal well path.
Step 4: calculate λ according to formula (1), the adjacent well logging of drilling straight-hole contrast section ratio K
1a positive drilling well well logging contrast section ratio K is calculated again divided by λ
2.
Step 5: K in proportion
2what print positive horizontal well drilling drilling tracking is corrected into the contrast of the well logging after vertical depth section, is K with ratio
1adjacent drilling straight-hole well logging contrast section contrast, contrast according to comparing result and positive horizontal well drilling original design, judge to be greater than positive horizontal well drilling original design distance into window distance, reduce hole angle to creep into compared with positive horizontal well drilling original design, judge to be less than positive horizontal well drilling original design distance into window distance, increase hole angle and creep into compared with positive horizontal well drilling original design.
As shown in Figure 2, be specifically described with updip stratum, when stratigraphic dip is α, when planned well hole angle is β, adjacent drilling straight-hole through stratum degree of depth h and planned well through stratum vertical depth H differ △ h, there is the relation of formula (2) between H and h, namely when planned well enters with β angle the stratum that inclination angle is α, through the vertical depth on stratum and the adjacent drilling straight-hole ratio through depth of stratum, if this ratio is λ.
λ is calculated, the adjacent well logging of drilling straight-hole contrast section ratio K according to formula (2)
1a positive drilling well well logging contrast section ratio K is calculated again divided by λ
2.Proportionally K
2printing well logging contrast section and ratio be K
1adjacent drilling straight-hole well logging contrast section contrast.
Step 1: collect adjacent drilling straight-hole well logging contrast section, the adjacent well logging of drilling straight-hole contrast section ratio is K
1.
Step: 2: collect positive horizontal well drilling well logging during data, hole deviation data, the hole angle that can read any position is β.
Step 3: collect stratigraphic dip α, and judge pendage type, if Fig. 2 is that attitude of stratum is tilted for horizontal well path updip.
Step 4: calculate λ according to formula (1), the adjacent well logging of drilling straight-hole contrast section ratio K
1a positive drilling well well logging contrast section ratio K is calculated again divided by λ
2.
Step 5: K in proportion
2what print positive horizontal well drilling drilling tracking is corrected into the contrast of the well logging after vertical depth section, is K with ratio
1adjacent drilling straight-hole well logging contrast section contrast, contrast according to comparing result and positive horizontal well drilling original design, judge to be greater than positive horizontal well drilling original design distance into window distance, reduce hole angle to creep into compared with positive horizontal well drilling original design, judge to be less than positive horizontal well drilling original design distance into window distance, increase hole angle and creep into compared with positive horizontal well drilling original design.
To on March 6th, 2014, co-occurrence field of the present invention tracking implementing 6 mouthfuls of water horizontal wells, entered window success rate 100%.Show that the Strata Comparison of the present invention before horizontal well enters window has accuracy high, the feature that coincidence rate is high.
Embodiment 1: official 86-36L well
This well location collects oil field king 27 fault block in the huge port officials of feudal dynasties, and oil-bearing layer position is oily group of one section, Dian Zu hole, Eogene hole jujube III, and design is bored and met oil reservoir 200m.Attitude of stratum to have a down dip inclination for horizontal well path, when being drilled into 3189m (vertical depth 2974m), and dark 3149m (vertical depth 2958m) at the bottom of the key horizon that distance is nearer herein, hole angle 72 °, stratigraphic dip 8.6 °.
The non-equal proportion Strata Comparison method before window is entered according to horizontal well
Step 1: collect the adjacent official of drilling straight-hole 82-42 borehole logging tool contrast section, official 82-42 borehole logging tool contrast section ratio K
1for 1:500.
Step: 2: collect positive horizontal well drilling well logging during data, hole deviation data, the hole angle β reading contrast position is 72 °.
Step 3: collecting stratigraphic dip α is 8.6 °, and judges pendage type, for attitude of stratum to have a down dip inclination for horizontal well path.
Step 4: calculating λ according to formula (1) is 1.87, the adjacent well logging of drilling straight-hole contrast section ratio K
1(1:500) a positive drilling well well logging contrast section ratio K is calculated divided by λ again
2for (1:935.4).
Step 5: K in proportion
2(1:935.4) what print positive horizontal well drilling drilling tracking is corrected into the contrast of the well logging after vertical depth section, is K with ratio
1(1:500) the adjacent official of drilling straight-hole 82-42 borehole logging tool contrast section contrasts, reference lamina and the official 82-42 well respective flag layer at official 86-36L well 3149m (vertical depth 2958m) place are 2936m, official 82-42 well 2936m reference lamina and oil reservoir top 2957m distance are 21m, window is entered at vertical depth 2997m (2958m+21m × 1.87) according to contrast prediction official 86-36L well, to enter window basically identical with design 2995m, can continue to creep into according to design.
If conveniently equal proportion Strata Comparison, prediction official 86-36L well enters window at vertical depth 2979m (2958m+21m), think that 16m (2995m-2979m) enters window in advance, hole deviation angle should be increased as early as possible, if implemented like this, cause on the contrary late enter window, waste drilling depth, bore meet less oil reservoir.
It is smooth that official 86-36L enters window, and well logging oil/gas show is better, and after entering window, adjustment in time, and net horizontal section has deepened 130m, bores and meet oil reservoir 343.3m, and after going into operation, stable yield is at about 30t.
Embodiment 2: wind 45-18H well
This well location is in Zao 89 fault block, and oil-bearing layer position is shop, Eogene hole group aperture leakage 4 oily groups, and design is bored and met oil reservoir 230m.Attitude of stratum is tilted for horizontal well path updip, when being drilled into 2655m (vertical depth 2584m), and dark 2640m (vertical depth 2578m) at the bottom of the key horizon that distance is nearer herein, hole angle 63.9 °, stratigraphic dip 6.5 °.
The non-equal proportion Strata Comparison method before window is entered according to horizontal well
Step 1: collect the adjacent jujube 87 of drilling straight-hole borehole logging tool contrast section, jujube 87 borehole logging tool contrast section ratio K
1for 1:500.
Step 2: collect positive horizontal well drilling well logging during data, hole deviation data, the hole angle β reading contrast position is 63.9 °.
Step 3: collecting stratigraphic dip α is 6.5 °, and judges pendage type, for attitude of stratum is tilted for horizontal well path updip.
Step 4: calculating λ according to formula (2) is 0.8113, the adjacent well logging of drilling straight-hole contrast section ratio K
1(1:500) a positive drilling well well logging contrast section ratio K is calculated divided by λ again
2for (1:405.65).
Step 5: K in proportion
2(1:405.65) what print positive horizontal well drilling drilling tracking is corrected into the contrast of the well logging after vertical depth section, is K with ratio
1(1:500) the adjacent jujube 87 of drilling straight-hole borehole logging tool contrast section contrasts, reference lamina and official's jujube 87 well respective flag layer at wind 45-18H well 2640m (vertical depth 2578m) place are 2570m, jujube 87 well 2570m reference lamina and oil reservoir top 2590m distance are 20m, window is entered at vertical depth 2594m (2578m+20m × 0.8113) according to contrast prediction wind 45-18H well, estimate that 2605m enters window and shifts to an earlier date 11m than original design, increase hole angle and creep into compared with design.
If conveniently equal proportion Strata Comparison, prediction wind 45-18H well enters window at vertical depth 2598m (2578m+20m), think that 7m (2605m-2598m) enters window in advance, although the drilling well of hole deviation angle also can be increased, but the speed increased can slow down, if implemented like this, window can be entered in advance, likely drill oil reservoir in advance.
It is smooth that wind 45-18H enters window, and well logging oil/gas show is better, and after entering window, adjustment in time, bores and meet oil reservoir 247.5m, and after going into operation, stable yield is at about 12t.
Embodiment 3: Wang14-33LJing
This well location collects oil field Guan142 block in the huge port officials of feudal dynasties, and oil-bearing layer position is the thick sandstone of Lower Mesozoic, and design is bored and met oil reservoir 170m.Attitude of stratum to have a down dip inclination for horizontal well path, when being drilled into 2711m (vertical depth 2574m), and dark 2687m (vertical depth 2565m) at the bottom of the key horizon that distance is nearer herein, hole angle 68 °, stratigraphic dip 9.2 °.
The non-equal proportion Strata Comparison method before window is entered according to horizontal well
Step 1: collect the adjacent king of drilling straight-hole 15-32 borehole logging tool contrast section, king 15-32 borehole logging tool contrast section ratio K
1for 1:500.
Step: 2: collect positive horizontal well drilling well logging during data, hole deviation data, the hole angle β reading contrast position is 68 °.
Step 3: collecting stratigraphic dip α is 9.2 °, and judges pendage type, for attitude of stratum to have a down dip inclination for horizontal well path.
Step 4: calculating λ according to formula (1) is 1.67, the adjacent well logging of drilling straight-hole contrast section ratio K
1(1:500) a positive drilling well well logging contrast section ratio K is calculated divided by λ again
2for (1:835).
Step 5: K in proportion
2(1:835) what print positive horizontal well drilling drilling tracking is corrected into the contrast of the well logging after vertical depth section, is K with ratio
1(1:500) the adjacent king of drilling straight-hole 15-32 borehole logging tool contrast section contrasts, reference lamina and the king 15-32 well respective flag layer at king 14-33L well 2687 (vertical depth 2565m) place are 2558m, king 15-32 well 2558m reference lamina and oil reservoir top 2573m distance are 15m, window is entered at vertical depth 2590.1m (2565m+15m × 1.67) according to contrast prediction Wang14-33LJing, early enter window 4.9m compared with entering window with design 2595m, increase hole angle and creep into compared with design.
If conveniently equal proportion Strata Comparison, prediction official 86-36L well enters window at vertical depth 2580m (2565m+15m), thinks that 15m enters window in advance, hole angle drilling well will be increased at faster speed, if implemented like this, cause late enter window, waste drilling depth, bores and meets less oil reservoir.
It is smooth that king 14-33L enters window, and well logging oil/gas show is better, but meet end water in order to avoid boring, and bore and meet oil reservoir 135m, after going into operation, stable yield is at about 20t.
It should be noted last that, above detailed description of the invention is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to example to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (6)
1. horizontal well enters the non-equal proportion Strata Comparison method before window, and it is characterized in that, method is as follows:
According to the adjacent well logging of the drilling straight-hole contrast section collected, positive horizontal well drilling well logging during data, hole deviation data and stratigraphic dip data, calculate and just boring well logging contrast section ratio, the well logging after vertical depth that is corrected into printing positive horizontal well drilling drilling tracking in described well logging contrast section ratio of just boring contrasts section, log well with adjacent drilling straight-hole and contrast section and contrast, contrast according to comparing result and positive horizontal well drilling original design, thus control into window hole angle.
2. a kind of horizontal well as claimed in claim 1 enters the non-equal proportion Strata Comparison method before window, and it is characterized in that, concrete steps are:
Step 1: collect adjacent drilling straight-hole well logging contrast section, the adjacent well logging of drilling straight-hole contrast section ratio is K
1;
Step 2: collect positive horizontal well drilling well logging during data, hole deviation data, the hole angle that can read any position is β;
Step 3: collect stratigraphic dip α, and judge pendage type;
Step 4: when attitude of stratum is for having a down dip for horizontal well path, planned well through stratum vertical depth H and adjacent drilling straight-hole through stratum degree of depth h differ △ h, the relation of formula (1) is there is between H and h, namely when planned well enters with β angle the stratum that inclination angle is α, through the vertical depth on stratum and the adjacent drilling straight-hole ratio through depth of stratum, if this ratio is λ;
λ is calculated, the adjacent well logging of drilling straight-hole contrast section ratio K according to formula (1)
1a positive drilling well well logging contrast section ratio K is calculated again divided by λ
2;
Attitude of stratum is when tilting for horizontal well path updip, adjacent drilling straight-hole through stratum degree of depth h and planned well through stratum vertical depth H differ △ h, the relation of formula (2) is there is between H and h, namely when planned well enters with β angle the stratum that inclination angle is α, through the vertical depth on stratum and the adjacent drilling straight-hole ratio through depth of stratum, if this ratio is λ;
λ is calculated, the adjacent well logging of drilling straight-hole contrast section ratio K according to formula (2)
1a positive drilling well well logging contrast section ratio K is calculated again divided by λ
2;
Step 5: in described positive drilling well well logging contrast section ratio K
2what print positive horizontal well drilling drilling tracking is corrected into the contrast of the well logging after vertical depth section, and is K with ratio
1adjacent drilling straight-hole well logging contrast section contrast, contrast according to comparing result and positive horizontal well drilling original design, thus control the hole angle into window.
3. a kind of horizontal well as claimed in claim 1 or 2 enters the non-equal proportion Strata Comparison method before window, it is characterized in that: the hole angle method that described control enters window is: when judging to be greater than positive horizontal well drilling original design distance into window distance, reducing hole angle and creeping into compared with positive horizontal well drilling original design; When judging to be less than positive horizontal well drilling original design distance into window distance, increasing hole angle and creeping into compared with positive horizontal well drilling original design; When judging into window distance with positive horizontal well drilling original design, apart from time consistent, can to continue to creep into according to positive horizontal well drilling original design.
4. horizontal well enters the non-equal proportion Strata Comparison device before window, it is characterized in that, comprising:
Collection module, for the adjacent well logging of the drilling straight-hole contrast section collected, positive horizontal well drilling well logging during data, hole deviation data and stratigraphic dip data;
Computing module, for the data of collecting according to collection module, calculates and is just boring well logging contrast section ratio;
Comparison module, the well logging after vertical depth that is corrected into for printing positive horizontal well drilling drilling tracking in described well logging contrast section ratio of just boring contrasts section, log well with adjacent drilling straight-hole and contrast section and contrast, contrast according to comparing result and positive horizontal well drilling original design, thus control into window hole angle.
5. a kind of horizontal well as claimed in claim 4 enters the non-equal proportion Strata Comparison device before window, it is characterized in that:
Described collection module is further used for collecting adjacent drilling straight-hole well logging contrast section, and the adjacent well logging of drilling straight-hole contrast section ratio is K
1; Collect positive horizontal well drilling well logging during data, hole deviation data, the hole angle that can read any position is β; Collect stratigraphic dip α, and judge pendage type;
When described computing module is further used for attitude of stratum for having a down dip for horizontal well path, planned well through stratum vertical depth H and adjacent drilling straight-hole through stratum degree of depth h differ △ h, the relation of formula (1) is there is between H and h, namely when planned well enters with β angle the stratum that inclination angle is α, through the vertical depth on stratum and the adjacent drilling straight-hole ratio through depth of stratum, if this ratio is λ;
λ is calculated, the adjacent well logging of drilling straight-hole contrast section ratio K according to formula (1)
1a positive drilling well well logging contrast section ratio K is calculated again divided by λ
2;
Attitude of stratum is when tilting for horizontal well path updip, adjacent drilling straight-hole through stratum degree of depth h and planned well through stratum vertical depth H differ △ h, the relation of formula (2) is there is between H and h, namely when planned well enters with β angle the stratum that inclination angle is α, through the vertical depth on stratum and the adjacent drilling straight-hole ratio through depth of stratum, if this ratio is λ;
λ is calculated, the adjacent well logging of drilling straight-hole contrast section ratio K according to formula (2)
1a positive drilling well well logging contrast section ratio K is calculated again divided by λ
2;
Described comparison module is further used in described positive drilling well well logging contrast section ratio K
2what print positive horizontal well drilling drilling tracking is corrected into the contrast of the well logging after vertical depth section, and is K with ratio
1adjacent drilling straight-hole well logging contrast section contrast, contrast according to comparing result and positive horizontal well drilling original design, thus control the hole angle into window.
6. a kind of horizontal well as described in claim 4 or 5 enters the non-equal proportion Strata Comparison device before window, it is characterized in that, described comparison module is further used for, when judging to be greater than positive horizontal well drilling original design distance into window distance, reducing hole angle and creep into compared with positive horizontal well drilling original design; When judging to be less than positive horizontal well drilling original design distance into window distance, increasing hole angle and creeping into compared with positive horizontal well drilling original design; When judging into window distance with positive horizontal well drilling original design, apart from time consistent, can to continue to creep into according to positive horizontal well drilling original design.
Priority Applications (1)
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106324698A (en) * | 2015-06-30 | 2017-01-11 | 中国石油化工股份有限公司 | Stratigraphic correlation method and system for petroliferous basin |
| CN106869792A (en) * | 2017-04-14 | 2017-06-20 | 中国石油集团渤海钻探工程有限公司 | Coal bed gas horizontal well horizontal segment goes out the method that selection chases after layer or sidetracking after layer |
| CN113700470A (en) * | 2021-06-18 | 2021-11-26 | 中国石油化工股份有限公司 | Method for correcting logging data of directional well |
| CN115142837A (en) * | 2022-07-08 | 2022-10-04 | 陕西延长石油（集团）有限责任公司 | Track design method for horizontal well vector window entry |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100094559A1 (en) * | 2008-10-14 | 2010-04-15 | Chevron U.S.A. Inc. | Pseudo logs to improve stratigraphic correlation between sedimentary basins |
| US20110232967A1 (en) * | 2004-10-28 | 2011-09-29 | Williams Danny T | Formation Dip Geo-Steering Method |
| CN102392601A (en) * | 2011-10-09 | 2012-03-28 | 中国石油化工股份有限公司 | Method for determining hole trajectory of multi-target horizontal well |
| CN102518433A (en) * | 2011-12-31 | 2012-06-27 | 中国石油天然气股份有限公司 | Target point adjusting method for horizontal well of thin carbonate reservoir |
| CN102635347A (en) * | 2012-03-30 | 2012-08-15 | 中国电子科技集团公司第二十二研究所 | Method for quantitatively enabling thin interbed to be equivalent to formation with horizontal and vertical resistivities |
| CN102996114A (en) * | 2011-09-14 | 2013-03-27 | 王维 | Inclined hole correction method of logging information |
| CN103790577A (en) * | 2013-07-23 | 2014-05-14 | 中国石油化工股份有限公司 | Depth domain constraint inversion method based on horizontal well horizontal section vertical shaft virtualization |
| CN103883311A (en) * | 2013-03-22 | 2014-06-25 | 中国石油化工股份有限公司 | Composite oriented drilling target-entering situation prediction method |
-
2014
- 2014-08-26 CN CN201410424313.XA patent/CN104314560B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110232967A1 (en) * | 2004-10-28 | 2011-09-29 | Williams Danny T | Formation Dip Geo-Steering Method |
| US20100094559A1 (en) * | 2008-10-14 | 2010-04-15 | Chevron U.S.A. Inc. | Pseudo logs to improve stratigraphic correlation between sedimentary basins |
| CN102996114A (en) * | 2011-09-14 | 2013-03-27 | 王维 | Inclined hole correction method of logging information |
| CN102392601A (en) * | 2011-10-09 | 2012-03-28 | 中国石油化工股份有限公司 | Method for determining hole trajectory of multi-target horizontal well |
| CN102518433A (en) * | 2011-12-31 | 2012-06-27 | 中国石油天然气股份有限公司 | Target point adjusting method for horizontal well of thin carbonate reservoir |
| CN102635347A (en) * | 2012-03-30 | 2012-08-15 | 中国电子科技集团公司第二十二研究所 | Method for quantitatively enabling thin interbed to be equivalent to formation with horizontal and vertical resistivities |
| CN103883311A (en) * | 2013-03-22 | 2014-06-25 | 中国石油化工股份有限公司 | Composite oriented drilling target-entering situation prediction method |
| CN103790577A (en) * | 2013-07-23 | 2014-05-14 | 中国石油化工股份有限公司 | Depth domain constraint inversion method based on horizontal well horizontal section vertical shaft virtualization |
Non-Patent Citations (3)
| Title |
|---|
| 蔡希源等译: "《实用构造法地下地质制图》", 31 January 2008 * |
| 郭凤吉: "苏里格气田水平井入窗技术的应用", 《中国石油和化工标准与质量》 * |
| 长春地质学院石油测井教研室: "《钻井地球物理勘探》", 31 December 1979 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106324698A (en) * | 2015-06-30 | 2017-01-11 | 中国石油化工股份有限公司 | Stratigraphic correlation method and system for petroliferous basin |
| CN106324698B (en) * | 2015-06-30 | 2018-09-11 | 中国石油化工股份有限公司 | Strata Comparison method and system for oil-gas bearing basin |
| CN106869792A (en) * | 2017-04-14 | 2017-06-20 | 中国石油集团渤海钻探工程有限公司 | Coal bed gas horizontal well horizontal segment goes out the method that selection chases after layer or sidetracking after layer |
| CN106869792B (en) * | 2017-04-14 | 2018-10-19 | 中国石油集团渤海钻探工程有限公司 | Coal bed gas horizontal well horizontal segment selects the method for chasing after layer or sidetracking after going out layer |
| CN113700470A (en) * | 2021-06-18 | 2021-11-26 | 中国石油化工股份有限公司 | Method for correcting logging data of directional well |
| CN113700470B (en) * | 2021-06-18 | 2024-05-24 | 中国石油化工股份有限公司 | Correction method for logging data of directional well |
| CN115142837A (en) * | 2022-07-08 | 2022-10-04 | 陕西延长石油（集团）有限责任公司 | Track design method for horizontal well vector window entry |
| CN115142837B (en) * | 2022-07-08 | 2024-05-14 | 陕西延长石油（集团）有限责任公司 | Track design method for horizontal well vector windowing |
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