CN102839922A - Novel light drilling tool - Google Patents
Novel light drilling tool Download PDFInfo
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- CN102839922A CN102839922A CN2012103608170A CN201210360817A CN102839922A CN 102839922 A CN102839922 A CN 102839922A CN 2012103608170 A CN2012103608170 A CN 2012103608170A CN 201210360817 A CN201210360817 A CN 201210360817A CN 102839922 A CN102839922 A CN 102839922A
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- drilling tool
- drilling
- drill pipe
- weight
- tool
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- 238000005553 drilling Methods 0.000 title claims abstract description 72
- 239000000463 material Substances 0.000 claims abstract description 15
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 10
- 239000010959 steel Substances 0.000 claims abstract description 10
- XTZVWOPRWVJODK-UHFFFAOYSA-N [Si].[Mn].[C] Chemical compound [Si].[Mn].[C] XTZVWOPRWVJODK-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910001563 bainite Inorganic materials 0.000 claims abstract description 6
- 229910000734 martensite Inorganic materials 0.000 claims abstract description 6
- 230000007704 transition Effects 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims 1
- 239000003208 petroleum Substances 0.000 abstract description 3
- 230000002929 anti-fatigue Effects 0.000 abstract 1
- 238000013461 design Methods 0.000 description 8
- 238000011161 development Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 208000020442 loss of weight Diseases 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The invention discloses a light drilling tool, belonging to the field of petroleum drilling mechanism. The light drilling tool is made by a low carbon manganese-silicon air-cooled bainite/martensitic duplex phase steel which is a high-intensity material, so that the weight of the drilling tool is greatly reduced; corresponding to the property of the material, the structure of a drill pipe is redesigned, and the wall thickness of the drill pipe is reduced until the thickness is lower than or identical to 7.3mm, which reduces the weight of the entire drilling tool by 20-25%; the tensile strength of the material is 1500MPa, and the yield intensity is 1200MPa; under an equal condition, the ability of drilling the super-deep well and the horizontal well is greatly improved; the drilling tool has more excellent anti-fatigue property and more excellent corrosion-resistance property; and the service life of the drilling tool is improved.
Description
Technical field
The present invention relates to the oil drilling machine field, particularly a kind of novel light drilling tool.
Background technology
Along with deepening continuously of petroleum exploration and development, the quantity of deep-well and ultradeep well progressively increases, and drilling depth is increasing; The structure bearing capacity of carrying drilling rod simultaneously on the ground is limited; When boring deep-well, just require the bigger weight of ground loading like this, this has also also proposed with big test bearing structure; Drill string in these wells is bearing very high tensile stress and complicated alternating stresses effect; Design has proposed challenge to drill string, adds down-hole complicated operating mode and alternating stresses, therefore the drill string performance has been proposed requirements at the higher level.
Progress along with the processing technology of material; Have a lot of high strength steels to emerge now, they have the yield limit higher than original common iron, have better corrosion resistance simultaneously; How to utilize current material that existing jackrod structure is carried out the loss of weight design; Make them under the situation that keeps original premium properties, have lighter weight, this is the emphasis of work.
In order to promote the drilling duty of ultradeep well and horizontal well; Set about from reducing aspects such as drill string quality, moment of torsion and towrope resistance; Adopt the high-strength material low Carbon Manganese-silicon air-colled bainite/martensite multi-phase steel of development newly to make the lightweight drilling tool; Therefore need the characteristic of bond material that drilling rod is designed again, alleviating the weight of drilling tool, and can reduce the use of material.
At present, mainly there is following problem in existing common steel drilling tool in application:
1, common steel drilling tool weight is big, and this has just increased the load of drilling derrick and the load of rig power end undoubtedly, has therefore limited drilling depth greatly.
2, intensity gravity is than low, the intensity gravity ratio that a principal element of restriction extended reach well, ultradeep well and dark directional well drilling ability is a drilling tool.
3, fatigue resistance, corrosion resistance are not high enough.
The content of invention
Big to common steel drilling tool weight in the petroleum exploration and development drilling well, intensity gravity is than low, defective such as fatigue resistance, corrosion resistance are low; The present invention provides a kind of lightweight drilling tool, and it is manufactured and formed by the high-strength material low Carbon Manganese-silicon air-colled bainite/martensite multi-phase steel of development newly, has reduced the weight of every drilling rod greatly; Thereby reduce the weight of whole drill string in the drilling process; Again designing to the structure of properties of materials to drilling rod, is example with three and half drilling rods, and drill pipe thickness is reduced to 7.3mm; Can make whole drilling tool weight saving 20%～25%; The hot strength of material reaches 1500MPa, and yield strength is 1200MPa, under the constant situation of the supporting capacity of derrick itself and winch driving power, drilling depth is deepened; Drilling tool has better fatigue resistance and anticorrosion properties, has improved the application life of drilling tool.
The technical solution adopted for the present invention to solve the technical problems is: adopt a kind of high-strength material low Carbon Manganese-silicon air-colled bainite/martensite multi-phase steel of development newly to make drilling rod, to reduce the weight of drilling rod, simultaneously the structure of lightweight drilling rod has been carried out design again; Shown in accompanying drawing; Drill pipe body (1), the changeover portion of drill pipe body (2), tool joint is connected with drill pipe body (1) at the F place; Type of attachment is friction welding, and tool joint has internal and external screw thread.Again the design back constant internal diameter of drilling rod external diameter becomes big; Drill pipe thickness reduces, and thickness is less than or equal to 7.3mm, and the changeover portion district of drilling rod is that stress is concentrated the most serious zone in the total; Carry out analysis and optimization through the finite element principle; Draw the minimum design parameters of the changeover portion factor of stress concentration, three and half drilling rod transition section length (L) >=100 mm, changeover portion arc radius (R) >=300 mm; Analysis result shows that drilling rod has enough structural strengths, still can satisfy the site work requirement after the design of drilling rod loss of weight.
Through research and analysis, draw the novel light brill and have the following advantages:
1, light-duty drilling tool is in light weight, and yield strength is high, and strength-weight ratio is high, and the drilling tool wall after the design is thin, can alleviate 20%～25% of whole drilling tool weight.
2,, under the constant situation of the supporting capacity of derrick itself and winch driving power, make the drilling depth intensification because drilling tool itself is in light weight.
3, have better fatigue resistance and anticorrosion properties, increased application life.
4, can effectively reduce the frictional resistance of drilling tool in well in the process of making a trip, drilling tool gently can reduce the load of derrick and rig simultaneously, in the process of drilling well, can reduce TORQ, thereby reduce rotating disk power end load.
5, reduce the load of diesel engine, effectively reduce relevant equipment attrition and prolong the application life of equipment and the consumption of diesel oil, practice thrift drilling cost.
6, convenient transportation after the weight saving can alleviate the load in the vehicle transport.
Description of drawings
Accompanying drawing is a lightweight drill rod pipe end structural representation.
Among the figure, 1-drill pipe body; The changeover portion of 2-drill pipe body; L-drilling rod transition section length; F-tool joint and drill rod pipe end are welded to connect the place; R-changeover portion arc radius.
The specific embodiment
With reference to Figure of description the structure design of lightweight drilling tool of the present invention is done following the detailed description.
Shown in accompanying drawing, the changeover portion of drill pipe body (2) is that stress is concentrated the most serious zone in the whole jackrod structure, and the present invention has taken into full account the on-the-spot actual needs that use complex working condition; Under the condition that does not reduce drilling rod intensity; Adopt high-strength material low Carbon Manganese-silicon air-colled bainite/martensite multi-phase steel to make drilling rod, the structure of drilling rod is designed warp under the condition that does not change the drill pipe body external diameter, increasing again; Reduced the wall thickness of drilling rod, to reduce the weight of drilling rod.Utilize analysis of finite element method to calculate and optimization, draw the optimum structure parameter transition section length (L) and the changeover portion arc radius (R) of three and half drill pipe body changeover portions (2).
In the actual well drilled process; Many drilling rods are through the nipple composition drill string that is connected; Power end drives the drill string rotary drilling, and drilling rod receives the acting in conjunction of tensile load, moment of flexure and moment of torsion simultaneously, and when circulation of drilling fluid; The drilling rod inwall receives the strong percussion of high pressure drilling liquid, and drilling rod should have enough intensity, reliability, stability and anticorrosion properties.
Claims (3)
1. lightweight drilling tool; Comprise tool joint and drill pipe body (1), it is characterized in that: also comprise changeover portion (2), transition section length (L) >=100 mm; Changeover portion arc radius (R) >=300 mm, the end of tool joint and drill pipe body (F) locates to be connected as a single entity.
2. lightweight drilling tool according to claim 1 is characterized in that: adopt high-strength material low Carbon Manganese-silicon air-colled bainite/martensite multi-phase steel to manufacture the lightweight drilling tool, the hot strength of material reaches 1500 MPa, and yield strength is 1200 MPa.
3. lightweight drilling tool according to claim 1 is characterized in that: three and half drill pipe body wall thickness reduce, and thickness is less than or equal to 7.3mm, common three and half drilling rods of original relatively wall thickness, and the drilling rod overall weight alleviates 20%～25%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103608170A CN102839922A (en) | 2012-09-21 | 2012-09-21 | Novel light drilling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103608170A CN102839922A (en) | 2012-09-21 | 2012-09-21 | Novel light drilling tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102839922A true CN102839922A (en) | 2012-12-26 |
Family
ID=47367614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103608170A Pending CN102839922A (en) | 2012-09-21 | 2012-09-21 | Novel light drilling tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102839922A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106041413A (en) * | 2016-05-30 | 2016-10-26 | 南充市锐进机械制造有限公司 | hot shrinkage method for drill rod connector of geophysical exploration rig |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4400210A (en) * | 1981-06-10 | 1983-08-23 | Sumitomo Metal Industries, Ltd. | Alloy for making high strength deep well casing and tubing having improved resistance to stress-corrosion cracking |
| JP2003166037A (en) * | 2001-11-28 | 2003-06-13 | Japan Marine Sci & Technol Center | Drill pipe and method of manufacturing the same |
| CN101096044A (en) * | 2006-06-30 | 2008-01-02 | 宝山钢铁股份有限公司 | Method for manufacturing over-length upset end drilling rod |
| CN101332485A (en) * | 2008-07-25 | 2008-12-31 | 山东墨龙石油机械股份有限公司 | Processing method of end upsetting of drill pipe |
| CN101724736A (en) * | 2009-12-15 | 2010-06-09 | 重庆长安工业(集团)有限责任公司 | Upper bainite quenching strengthening technology for heat treatment of chromium-manganese-silicon low-alloy structural steel |
| CN202165027U (en) * | 2011-07-08 | 2012-03-14 | 中国石油天然气集团公司 | Drill stem for directional traversing |
-
2012
- 2012-09-21 CN CN2012103608170A patent/CN102839922A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4400210A (en) * | 1981-06-10 | 1983-08-23 | Sumitomo Metal Industries, Ltd. | Alloy for making high strength deep well casing and tubing having improved resistance to stress-corrosion cracking |
| JP2003166037A (en) * | 2001-11-28 | 2003-06-13 | Japan Marine Sci & Technol Center | Drill pipe and method of manufacturing the same |
| CN101096044A (en) * | 2006-06-30 | 2008-01-02 | 宝山钢铁股份有限公司 | Method for manufacturing over-length upset end drilling rod |
| CN101332485A (en) * | 2008-07-25 | 2008-12-31 | 山东墨龙石油机械股份有限公司 | Processing method of end upsetting of drill pipe |
| CN101724736A (en) * | 2009-12-15 | 2010-06-09 | 重庆长安工业(集团)有限责任公司 | Upper bainite quenching strengthening technology for heat treatment of chromium-manganese-silicon low-alloy structural steel |
| CN202165027U (en) * | 2011-07-08 | 2012-03-14 | 中国石油天然气集团公司 | Drill stem for directional traversing |
Non-Patent Citations (1)
| Title |
|---|
| 傅建钦等: "基于应力集中分析的钻杆内加厚过渡结构设计", 《力学与实践》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106041413A (en) * | 2016-05-30 | 2016-10-26 | 南充市锐进机械制造有限公司 | hot shrinkage method for drill rod connector of geophysical exploration rig |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Cai Zhengmin Inventor after: Yuan Bifei Inventor after: Liu Xinhai Inventor after: Jiang Yun Inventor after: Zhang Donghai Inventor before: Cai Zhengmin Inventor before: Wang Zhujun Inventor before: Yuan Bifei Inventor before: Liu Xinhai |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: CAI ZHENGMIN WANG ZHUJUN YUAN BIFEI LIU XINHAI TO: CAI ZHENGMIN YUAN BIFEILIU XINHAI JIANG YUN ZHANG DONGHAI |
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| C05 | Deemed withdrawal (patent law before 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121226 |