CN2871919Y - Long-life piston of mud pump - Google Patents
Long-life piston of mud pump Download PDFInfo
- Publication number
- CN2871919Y CN2871919Y CN 200520046280 CN200520046280U CN2871919Y CN 2871919 Y CN2871919 Y CN 2871919Y CN 200520046280 CN200520046280 CN 200520046280 CN 200520046280 U CN200520046280 U CN 200520046280U CN 2871919 Y CN2871919 Y CN 2871919Y
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- China
- Prior art keywords
- piston
- rubber cup
- cup
- core
- mud
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model relates to a long period of usage slurry pump piston, which comprises a piston core, a sealing ring, a nylon ring, a rubber cup, a clamp plate, and a circlip; the rubber cup and the nylon ring are bounded to form a piston rubber cup, the piston rubber cup is arranged on the piston core, the clamp plate and the circlip fix the piston rubber cup onto the piston core; a seal lip is provided for the piston rubber cup bore. The seal lip strengthens sealing of the piston rubber cup bore, prevents slurry entering annular space of the piston rubber cup bottom from the piston rubber cup bore, avoids slurry erosion of the piston root, and increases period of usage of the piston.
Description
Technical field:
The utility model relates to a kind of mud piston assembly, especially drilling machinery mud piston assembly.
Background technique:
Mud piston is one of vitals of drilling pump, as shown in Figure 1, existing mud piston by: piston core 1, seal ring 2, nylon ring 3, rubber cup 4, pressing plate 5, jump ring 6 are formed.By rubber cup 4 and the nylon ring 3 bonding piston cups of forming.Piston cup is assembled on the piston core 1, and pressing plate 5 and jump ring 6 are fixed on piston cup on the piston core 1.
According to test, the scarce filling of comet shape appears in the damage of piston often from the piston cup root, and its destructive process is: piston cup rubber produces axial deformation under the effect of high-pressure slurry.When suction stroke, because frictional force is opposite with moving direction, makes the piston cup root break away from piston core flange part face and form annular space, this moment, mud entered the annular space of piston cup root from the piston cup endoporus.When discharging stroke, piston cup is subjected to the effect of head pressure, makes interior this strand slurry erosion of annular space the root of piston cup, makes the leather cup root be gone out the defective of comet shape by erosion, the effect repeatedly of this strand mud constantly enlarges defective, damages up to piston cup.This is the major reason that piston damages.Therefore, piston is the main easily damaged parts of drilling well single-acting drilling mud pump.
Summary of the invention:
For solving the problems of the technologies described above, the utility model proposes a kind of long lifetime mud piston, increase seal lip at existing piston leather cup endoporus, the size of seal lip is decided according to piston size.Strengthened the sealing of piston cup endoporus, prevented that mud from entering the annular space of piston cup root from the piston cup endoporus, thereby prevented the generation of mud drill piston cup root phenomenon, thereby made the working life of piston cup or raising doubly.Proving through repetition test, is 1.5 times～2 times of working life of pot type piston in the working life that the piston cup endoporus has increased the piston of seal lip.
The utility model is different with the piston of prior art, and this structure of evidence satisfies the requirement of various operating modes fully, and reduces wear, and maintenance and replacing are convenient.
Description of drawings:
Fig. 1 the utility model mud piston structural representation.
Fig. 2 the utility model mud piston lip enlarged view.
Embodiment:
As shown in Figure 1 and Figure 2, existing mud piston by: piston core 1, seal ring 2, nylon ring 3, rubber cup 4, pressing plate 5, jump ring 6 are formed.By rubber cup 4 and the nylon ring 3 bonding piston cups of forming.Piston cup is assembled on the piston core 1, and pressing plate 5 and jump ring 6 are fixed on piston cup on the piston core 1.Be provided with seal lip 7 at existing piston leather cup endoporus.
Use mud piston of the present utility model to carry out drillng operation by the Zhongyuan Petroleum Exploration Bureau drilling company in African Republic of the Sudan MIYAN oil field, examine working life at situ of drilling well.Data are as follows:
Life test is carried out on the F-1600 slurry pump;
Cylinder sleeve internal diameter: 160mm;
Slurry pump pump pressure: 17.5-22.5Mpa;
The slurry pump strokes per minute: 100 dash/minute;
Mud cleaning system is made up of vibrating sieve, sand remover, desilter etc.
Mud balance: 1.03-1.32;
Mud sand content≤1%.
By the use of 25 pistons of three mouthfuls of wells, please referring to following table 1, think that be stable the working life of piston, 25 piston mean lifetime are 491 hours.Can guarantee slurry pump stable operation under high pump pressure for a long time, guarantee the realization of jet drilling technology, for improving bit speed and reducing drilling cost and play conclusive effect.
Table 1:
| Numbering | The mounting point | Use the date | Use well section rice | During working life: divide | The cylinder sleeve situation |
| 1 | 2#_3 | 6.27～7.31 7.31～10.12 | 0～2227m 0～1690m | 639:37 | Newer |
| 2 | 2#_3 | 10.14～10.26 11.9～11.24 | 1690～2500m 0～1973m | 470 | Newly |
| 3 | 2#_3 | 11.24～12.21 | 1973～3102m | 551 | Newly |
| 4 | 2#_3 | 12.21～1.20 | 3102～3500m | 442 | Newly |
| 5 | 2#_1 | 6.27～7.31 7.31～10.06 | 0～2227m 0～1389m | 589:30 | Newly |
| 6 | 2#_1 | 10.08～10.26 11.9～11.24 | 1389～2500m 0～1973m | 520 | Newly |
| 7 | 2#_1 | 11.24～12.18 | 1973～3065m | 538 | Newly |
| 8 | 2#_1 | 12.18～1.20 | 3065～3500m | 470 | Newly |
| 9 | 2#_2 | 6.27～7.31 7.31～10.12 | 0～2227m 0～1530m | 491 | Newly |
| 10 | 2#_2 | 10.12～10.26 11.9～11.20 | 1530～2500m 0～1860m | 409 | Newly |
| 11 | 2#-2 | 11.20～12.8 | 1860～2750m | 412 | Newer |
| 12 | 2#_2 | 12.8～ | 2750～3500m | 469 | Newly |
| 13 | 1#_3 | 6.30～7.31 7.31～9.27 | 0～2227m 0～1390m | 456 | Newly |
| 14 | 1#_3 | 9.27～10.16 | 1390～1820m | 416 | Newly |
| 15 | 1#_3 | 10.16～10.26 11.9～11.26 | 1820～2500m 0～2140m | 409 | New |
| 16 | 1#_3 | 11.26～12.28 | 2140～3115m | 418 | Newly |
| 17 | 1#_3 | 12.28～1.20 | 3115～3500m | 438 | Newly |
| 18 | 1#_2 | 6.27～7.31 7.31～9.12 | 0～2227m 0～1090m | 519:37 | Newer |
| 19 | 1#_2 | 9.12～10.26 11.9～11.24 | 1090～2500m 0～1973m | 590 | Newer |
| 20 | 1#_2 | 11.24～12.10 | 1973～3102m | 451 | Newly |
| 21 | 1#_2 | 12.10～1.20 | 3102～3500m | 542 | Newly |
| 22 | 1#_1 | 6.27～7.31 7.31～9.06 | 0～2227m 0～857m | 390:30 | Newly |
| 23 | 1#_1 | 9.08～10.26 11.9～11.14 | 1389～2500m 0～973m | 476 | Newly |
| 24 | 1#_1 | 11.14～12.18 | 973～2023m | 538 | Newly |
| 25 | 1#_1 | 12.18～1.20 | 2023～3500m | 634 | Newly |
Claims (1)
1, a kind of long lifetime mud piston is made up of piston core (1), seal ring (2), nylon ring (3), rubber cup (4), pressing plate (5), jump ring (6); By rubber cup (4) and the bonding piston cup of forming of nylon ring (3), piston cup is assembled on the piston core (1), and pressing plate (5) and jump ring (6) are fixed on piston cup on the piston core (1); It is characterized in that, be provided with seal lip (7) at the piston cup endoporus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520046280 CN2871919Y (en) | 2005-11-04 | 2005-11-04 | Long-life piston of mud pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520046280 CN2871919Y (en) | 2005-11-04 | 2005-11-04 | Long-life piston of mud pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2871919Y true CN2871919Y (en) | 2007-02-21 |
Family
ID=37740266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520046280 Expired - Fee Related CN2871919Y (en) | 2005-11-04 | 2005-11-04 | Long-life piston of mud pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2871919Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840487A (en) * | 2016-05-05 | 2016-08-10 | 中国石油集团渤海钻探工程有限公司 | Slurry pump piston and dismounting method thereof |
| CN105864028A (en) * | 2016-05-05 | 2016-08-17 | 中国石油集团渤海钻探工程有限公司 | Detachable pre-tightening mud pump piston and disassembling method thereof |
| CN108119324A (en) * | 2017-12-27 | 2018-06-05 | 中国石油天然气集团公司 | The more changing device and replacing options of drilling mud pump piston seal rubber |
| CN114523606A (en) * | 2022-04-24 | 2022-05-24 | 合肥精创科技有限公司 | High-performance double-hardness piston for slurry pump and preparation method thereof |
-
2005
- 2005-11-04 CN CN 200520046280 patent/CN2871919Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840487A (en) * | 2016-05-05 | 2016-08-10 | 中国石油集团渤海钻探工程有限公司 | Slurry pump piston and dismounting method thereof |
| CN105864028A (en) * | 2016-05-05 | 2016-08-17 | 中国石油集团渤海钻探工程有限公司 | Detachable pre-tightening mud pump piston and disassembling method thereof |
| CN105864028B (en) * | 2016-05-05 | 2018-02-02 | 中国石油集团渤海钻探工程有限公司 | Replaceable prefastening mud piston and its method for dismounting |
| CN108119324A (en) * | 2017-12-27 | 2018-06-05 | 中国石油天然气集团公司 | The more changing device and replacing options of drilling mud pump piston seal rubber |
| CN114523606A (en) * | 2022-04-24 | 2022-05-24 | 合肥精创科技有限公司 | High-performance double-hardness piston for slurry pump and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070221 Termination date: 20121104 |