CN104612664A - Bit pressure correction processing method at drilling time - Google Patents
Bit pressure correction processing method at drilling time Download PDFInfo
- Publication number
- CN104612664A CN104612664A CN201410744436.1A CN201410744436A CN104612664A CN 104612664 A CN104612664 A CN 104612664A CN 201410744436 A CN201410744436 A CN 201410744436A CN 104612664 A CN104612664 A CN 104612664A
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- Prior art keywords
- pressure
- drill
- porosity
- formula
- model
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
Abstract
The invention discloses a bit pressure correction processing method at drilling time and relates to the technical field of petroleum and natural gas exploration and development. A bit pressure correction model at the drilling time and a correlation model of the drilling time and the porosity are used for obtaining a deduced bit pressure correction model at the drilling time, regional data are substituted into the deduced bit pressure correction model to obtain a correction formula, and real-time bit pressure correction processing is conducted on the drilling time according to the correction formula. According to the method, bit pressure data of a drilled well in a region and drilling time data are used for establishing the bit pressure correction model, so the influence mode of bit pressure on the drilling time can be reflected truly.
Description
Technical field
The present invention relates to petroleum natural gas exploration technical field, relate in particular to the pressure of the drill correction processing method during a kind of boring, by setting up the pressure of the drill to calibration model when boring, get rid of the pressure of the drill to impact when boring, when making brill, data can more effectively reflect formation lithology and physical property characteristic.
Background technology
Be an important parameter in log data during brill, size during brill is that well logging scene judges one of important parameter that reservoir lithology, physical property change.But owing to being subject to the impact of various engineering parameter when boring, having the greatest impact wherein by the pressure of the drill, often causes during brill and occurs difference to the differentiation of reservoir lithology and physical property.And current the pressure of the drill bearing calibration is mainly derived according to equation for drilling rate, result of use is bad, mainly there is following problem:
1, need to ask for a threshold bit weight value by experiment in the pressure of the drill bearing calibration that equation for drilling rate is derived, expensive and do not meet field condition.
What the pressure of the drill bearing calibration that 2, equation for drilling rate is derived adopted is once linear function, and in the use procedure of reality, effect is poor, and refutes mutually with drilling technology principle.
Summary of the invention
The object of the invention is to the problems referred to above overcoming prior art existence, the pressure of the drill correction processing method during a kind of boring is provided, the present invention utilizes the pressure of the drill data of drilling well in region and data when boring to set up the pressure of the drill calibration model, can reflect that the pressure of the drill is to Effect Mode when boring truly.
The present invention realizes by adopting following technical proposals:
A kind of the pressure of the drill correction processing method when boring, it is characterized in that: when utilizing the pressure of the drill calibration model when boring and bore and the correlation model of degree of porosity, obtain the pressure of the drill calibration model during brill after deriving, obtain updating formula after substituting into area data, carry out real-time the pressure of the drill correction process according to updating formula to during brill.
Described processing method concrete steps are as follows:
During the brill of drilling well in a, comprehensive same block, the pressure of the drill and porosity data;
B, when region is bored and porosity data carry out correlation analysis, set up when boring and the correlation model of degree of porosity;
C, the pressure of the drill calibration model substituted into when boring with the correlation model of degree of porosity, obtain the pressure of the drill calibration model after derivation.
D, by region data substitute into derive after the pressure of the drill calibration model, obtain updating formula.
In described step b, when region is bored and porosity data carry out correlation analysis, set up when boring with the correlation model of degree of porosity, its specifically adopt publication number for adopt in 102900432A patent application publication method establishment brill time and the correlation model of degree of porosity.
In described step c, the pressure of the drill calibration model is:
formula 1;
In formula:
--when correcting brill, min/m;
t--during brill, min/m;
--the pressure of the drill calibration model;
w--the pressure of the drill, kN;
And when boring and degree of porosity correlation model be:
formula 2;
In formula:
--degree of porosity %;
The pressure of the drill to after correction process during brill is:
formula 3;
The pressure of the drill calibration model is substituted into when boring and the correlation model of degree of porosity, obtains the pressure of the drill calibration model after deriving:
formula 4.
Compared with prior art, the beneficial effect that reaches of the present invention is as follows:
1, the present invention utilizes the pressure of the drill data of drilling well in region and data when boring to set up the pressure of the drill calibration model, can reflect that the pressure of the drill is to Effect Mode when boring truly.
2, do not need to buy special laboratory apparatus, directly application available data carries out the pressure of the drill correction process to during brill.
3, compared to the calibration model of equation for drilling rate, obviously practicality is had more.
Accompanying drawing explanation
Below in conjunction with specification drawings and specific embodiments, the present invention is described in further detail, wherein:
The pressure of the drill calibration model schematic diagram when Fig. 1 is the brill in region of the present invention.
Detailed description of the invention
The invention discloses the pressure of the drill correction processing method of data during a kind of boring, its step is as follows:
During the brill of drilling well in a, comprehensive same block, the pressure of the drill and porosity data;
B, when region is bored and porosity data carry out correlation analysis, set up when boring and the correlation model of degree of porosity (existing patent: during micro-brill, data calculate well logging degree of porosity carry out evaluating reservoir with boring);
C, the pressure of the drill calibration model substituted into when boring with the correlation model of degree of porosity, obtain the pressure of the drill calibration model after derivation.
D, by region data substitute into derive after the pressure of the drill calibration model, obtain updating formula.
In described step c, the pressure of the drill calibration model is:
formula 1;
In formula:
--when correcting brill, min/m;
t--during brill, min/m;
--the pressure of the drill calibration model;
w--the pressure of the drill, kN;
And when boring and degree of porosity correlation model (existing patent: during micro-brill, data calculate well logging degree of porosity carry out evaluating reservoir with boring):
formula 2;
In formula:
--degree of porosity %;
The pressure of the drill to after correction process during brill is:
formula 3;
The pressure of the drill calibration model after derivation:
formula 4.
When this method utilizes the pressure of the drill calibration model when boring and bores and the correlation model of degree of porosity, obtain the pressure of the drill calibration model during brill after deriving, updating formula is obtained after substituting into area data, carry out real-time the pressure of the drill correction process according to updating formula to during brill, make the physical property characteristic that more effectively can reflect stratum during brill.
Claims (3)
1. the pressure of the drill correction processing method when boring, it is characterized in that: when utilizing the pressure of the drill calibration model when boring and bore and the correlation model of degree of porosity, obtain the pressure of the drill calibration model during brill after deriving, obtain updating formula after substituting into area data, carry out real-time the pressure of the drill correction process according to updating formula to during brill.
2. the pressure of the drill correction processing method during brill according to claim 1, is characterized in that: described processing method concrete steps are as follows:
During the brill of drilling well in a, comprehensive same block, the pressure of the drill and porosity data;
B, when region is bored and porosity data carry out correlation analysis, set up when boring and the correlation model of degree of porosity;
C, the pressure of the drill calibration model substituted into when boring with the correlation model of degree of porosity, obtain the pressure of the drill calibration model after derivation;
D, by region data substitute into derive after the pressure of the drill calibration model, obtain updating formula.
3. the pressure of the drill correction processing method during brill according to claim 1, is characterized in that:
In described step c, the pressure of the drill calibration model is:
formula 1;
In formula:
--when correcting brill, min/m;
t--during brill, min/m;
--the pressure of the drill calibration model;
w--the pressure of the drill, kN;
And when boring and degree of porosity correlation model be:
formula 2;
In formula:
--degree of porosity %;
The pressure of the drill to after correction process during brill is:
formula 3;
The pressure of the drill calibration model is substituted into when boring and the correlation model of degree of porosity, obtains the pressure of the drill calibration model after deriving:
formula 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410744436.1A CN104612664A (en) | 2014-12-09 | 2014-12-09 | Bit pressure correction processing method at drilling time |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410744436.1A CN104612664A (en) | 2014-12-09 | 2014-12-09 | Bit pressure correction processing method at drilling time |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104612664A true CN104612664A (en) | 2015-05-13 |
Family
ID=53147289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410744436.1A Pending CN104612664A (en) | 2014-12-09 | 2014-12-09 | Bit pressure correction processing method at drilling time |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104612664A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030015351A1 (en) * | 1996-03-25 | 2003-01-23 | Halliburton Energy Services, Inc. | Method and system for predicting performance of a drilling system of a given formation |
| CA2653115A1 (en) * | 2009-01-23 | 2010-07-23 | Varel International Ind., L.P. | Method to determine rock properties from drilling logs |
| CN202544844U (en) * | 2012-03-16 | 2012-11-21 | 中国石油天然气集团公司 | Tester for determining rock drillability and drilling parameter sensitivity |
| CN102900372A (en) * | 2012-10-16 | 2013-01-30 | 中国石油大学(北京) | Method and device for predicting reasonable service life of PDC (Polycrystalline Diamond Compact) drill bit |
| CN102900432A (en) * | 2012-10-31 | 2013-01-30 | 中国石油集团川庆钻探工程有限公司 | Method for reservoir assessment by calculating logging porosity while drilling by utilizing data during micro drilling |
| CN103590828A (en) * | 2013-11-26 | 2014-02-19 | 中国石油集团川庆钻探工程有限公司 | Method for evaluating formation pressure through well logging dck index method |
-
2014
- 2014-12-09 CN CN201410744436.1A patent/CN104612664A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030015351A1 (en) * | 1996-03-25 | 2003-01-23 | Halliburton Energy Services, Inc. | Method and system for predicting performance of a drilling system of a given formation |
| CA2653115A1 (en) * | 2009-01-23 | 2010-07-23 | Varel International Ind., L.P. | Method to determine rock properties from drilling logs |
| CN202544844U (en) * | 2012-03-16 | 2012-11-21 | 中国石油天然气集团公司 | Tester for determining rock drillability and drilling parameter sensitivity |
| CN102900372A (en) * | 2012-10-16 | 2013-01-30 | 中国石油大学(北京) | Method and device for predicting reasonable service life of PDC (Polycrystalline Diamond Compact) drill bit |
| CN102900432A (en) * | 2012-10-31 | 2013-01-30 | 中国石油集团川庆钻探工程有限公司 | Method for reservoir assessment by calculating logging porosity while drilling by utilizing data during micro drilling |
| CN103590828A (en) * | 2013-11-26 | 2014-02-19 | 中国石油集团川庆钻探工程有限公司 | Method for evaluating formation pressure through well logging dck index method |
Non-Patent Citations (3)
| Title |
|---|
| 刘风荣等: "标准钻时录井法", 《石油钻探技术》 * |
| 唐家琼等: "对录井参数划分岩性界面的认识", 《录井技术》 * |
| 张谊平: "综合录井钻时参数在火山岩储层评价中的应用", 《大庆石油地质与开发》 * |
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Application publication date: 20150513 |