CN1644871A - Injection system for eliminating sucking pressure as coming out of hole - Google Patents
Injection system for eliminating sucking pressure as coming out of hole Download PDFInfo
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- CN1644871A CN1644871A CN 200510020178 CN200510020178A CN1644871A CN 1644871 A CN1644871 A CN 1644871A CN 200510020178 CN200510020178 CN 200510020178 CN 200510020178 A CN200510020178 A CN 200510020178A CN 1644871 A CN1644871 A CN 1644871A
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- injection
- trip
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- drilling fluid
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Abstract
An injection system for eliminating the sucking pressure caused by lifting drilling rod and preventing well jet is composed of an automatic injection control system and an automatic injection pump connected via pipe to a well-drilling liquid tank for injecting the liquid to the drill bit position.
Description
Technical field:
The present invention relates to a kind of injected system of in oil gas well drilling, eliminating the trip-out swabbing pressure.It also is applicable to the drillng operation in fields such as underground heat, the hydrology, mineral products.
Background technology:
In the actual well drilled operation, cause the interior serious pressure excitement of well owing to removing drill string, especially obvious to deep-well, weighted mud.The swabbing pressure of Qi Zuaning particularly, the trip-out swabbing pressure makes formation gas be drawn in the well, may cause overflow, blowout; The trip-out swabbing pressure makes that borehole wall stability suffers to destroy, may cause cave-in.In order to slow down the influence of swabbing pressure, can only adopt the method that reduces trip-out speed, increases mud density at present.Reduce trip-out speed and cause the waste of drilling well timeliness, increase mud density and cause low drilling speed and down-hole accident occurred frequently.
Summary of the invention:
The objective of the invention is to: eliminate the swabbing pressure in the trip-out process, prevent that swabbing action from producing blowout, cave-in, the spy provides a kind of injected system of eliminating the trip-out swabbing pressure.
. in order to achieve the above object, the present invention by the following technical solutions: a kind of injected system of eliminating the trip-out swabbing pressure, this system cooperate the top to order about usefulness.Its technical characterictic is: injected system is moved the automatic injection pump 3 of control by automatic injection control system 4 and one by automatic injection control system 4 and is formed; Automatically injection pump 3 is connected with drilling fluid tank (or pond) 1 by drilling fluid input pipe 2, and injection pump 3 is injected into the drill bit place by standpipe inlet 5 by drill string with drilling fluid automatically; Automatically injection pump 3 is connected with injection control system 4 automatically, and automatic injection control system 4 acceptance are from the trip-out actuating signal 8 of rig floor winch, through logic circuit control automatic injection pump 3 when hoisting drilling tool by preset program work; Drilling fluid injection length, injection rate and injection rate by the size of trip-out speed, mud property, well and drill string and degree of depth etc. control.
Cooperate the present invention, mathematical model, computational methods and programming software are arranged.Automatically in the computer of injection control system 4 pre-set programs is arranged, carry out the relevant calculation of swabbing pressure and send control instruction.Expression trip-out swabbing pressure is eliminated the effect calculating of system in Fig. 2, and abscissa represents that time, unit are second (s); Ordinate is represented swabbing pressure, and unit is MPa (Mpa); Trip-out speed is 1 meter per second, and four curves are represented respectively to adopt under the trip-out condition equally and the result of calculation that does not adopt this injected system among the figure.
The present invention has the following advantages: (1) can eliminate the swabbing pressure in the trip-out process, and has the effect of automatic grouting simultaneously; (2) can make high pressure, excessive risk oil gas well drilling safer, can prevent that swabbing action from producing blowout, the untimely generation blowout that prevents to be in the milk, preventing that swabbing action from bringing out borehole well instability; (3) can increase substantially trip-out speed; (4) can reduce drilling fluid density to obtain higher drilling speed and to reduce down-hole accident.
Description of drawings
Fig. 1 is the injected system of elimination trip-out swabbing pressure of the present invention.Among the figure: 1, drilling fluid tank (pond); 2, drilling fluid input pipe; 3, automatic injection pump; 4, automatic injection control system; 5, standpipe inlet; 6, inject three way cock; 7, borehole pump inlet; 8, trip-out actuating signal.
Fig. 2 is that effect of the present invention is calculated.Among the figure: 9, adopt conventional mud swabbing pressure change curve of the present invention; 10, adopt thickness weighted mud swabbing pressure change curve of the present invention; 11, (not adopting the present invention) conventional mud swabbing pressure change curve during conventional drilling; 12, (not adopting the present invention) thickness weighted mud swabbing pressure change curve during conventional drilling.
The specific embodiment:
The invention will be further described with example in conjunction with the accompanying drawings.
At first collect the data of relevant casing programme physical dimension and drilling tool physical dimension, parameters such as the rheological characteristic of measurement drilling fluid and density are imported automatic injection control system 4 with these data and parameter.Automatically in the computer of injection control system 4 pre-set programs is arranged, carry out the relevant calculation of swabbing pressure and send control instruction.Next has the displacement transducer record and imports the actuating signal that makes a trip and remove speed, and remains drill string length, position in the logical calculated well.Before the trip-out, inject three way cock 6 the borehole pump inlet is closed, automatic injection control system 4 is communicated with standpipe inlet 5.It is preceding to play each column (or single), and the top is driven at first swiveling faucet is docked with drill string.Automatic control system 4 is according to the action of action and speed command injected system, control injection rate and the injection length of pulling out of hole.Tourist bus plays after top dead center, and drill string is by the slip spider jail, unclamps being connected of swiveling faucet and drill string, unloads lower pillar stand (or single).So process finishes until pulling out of hole.
Claims (2)
1, a kind of injected system of eliminating the trip-out swabbing pressure, cooperate the top to order about usefulness, it is characterized in that: injected system is moved the automatic injection pump 3 of control by automatic injection control system 4 and one by automatic injection control system 4 and is formed, automatically injection pump 3 is connected with drilling fluid tank or pond 1 by drilling fluid input pipe 2, and injection pump 3 is injected into the drill bit place by standpipe inlet 5 by drill string with drilling fluid automatically; Automatically injection pump 3 is connected with injection control system 4 automatically, and automatic injection control system 4 acceptance are from the trip-out actuating signal of rig floor winch, through logic circuit control automatic injection pump 3 when hoisting drilling tool by preset program work; Drilling fluid injection length, injection rate and injection rate by the size of trip-out speed, mud property, well and drill string and degree of depth etc. control.
2, injected system according to claim 1 is characterized in that: in the computer of injection control system 4 pre-set programs is arranged automatically, carry out the relevant calculation of swabbing pressure and send control instruction; Automatically injection control system 4 moves and trip-out speed according to pulling out of hole, the action of instruction injected system, control injection rate and injection length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100201783A CN100497881C (en) | 2005-01-13 | 2005-01-13 | Injection system for eliminating sucking pressure as coming out of hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100201783A CN100497881C (en) | 2005-01-13 | 2005-01-13 | Injection system for eliminating sucking pressure as coming out of hole |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1644871A true CN1644871A (en) | 2005-07-27 |
| CN100497881C CN100497881C (en) | 2009-06-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100201783A Expired - Fee Related CN100497881C (en) | 2005-01-13 | 2005-01-13 | Injection system for eliminating sucking pressure as coming out of hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100497881C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022082A (en) * | 2010-10-15 | 2011-04-20 | 中国海洋石油总公司 | A ground instruction transmission method for controlling rotary steering drilling tool and an apparatus for the same |
| CN110284847A (en) * | 2019-01-29 | 2019-09-27 | 长江大学 | A kind of drilling-fluid circulation system reducing drilling well trip-out swabbing pressure |
| CN113958278A (en) * | 2021-09-14 | 2022-01-21 | 中国石油天然气集团有限公司 | Method for preventing borehole wall from collapsing in tripping process of slim-hole horizontal well |
| CN115467652A (en) * | 2022-10-31 | 2022-12-13 | 四川宏华电气有限责任公司 | Automatic correction method for drilling data |
-
2005
- 2005-01-13 CN CNB2005100201783A patent/CN100497881C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022082A (en) * | 2010-10-15 | 2011-04-20 | 中国海洋石油总公司 | A ground instruction transmission method for controlling rotary steering drilling tool and an apparatus for the same |
| CN102022082B (en) * | 2010-10-15 | 2013-02-13 | 中国海洋石油总公司 | A ground instruction transmission method for controlling rotary steering drilling tool and an apparatus for the same |
| CN110284847A (en) * | 2019-01-29 | 2019-09-27 | 长江大学 | A kind of drilling-fluid circulation system reducing drilling well trip-out swabbing pressure |
| CN113958278A (en) * | 2021-09-14 | 2022-01-21 | 中国石油天然气集团有限公司 | Method for preventing borehole wall from collapsing in tripping process of slim-hole horizontal well |
| CN113958278B (en) * | 2021-09-14 | 2023-11-07 | 中国石油天然气集团有限公司 | Method for preventing well wall collapse in small well horizontal well tripping process |
| CN115467652A (en) * | 2022-10-31 | 2022-12-13 | 四川宏华电气有限责任公司 | Automatic correction method for drilling data |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100497881C (en) | 2009-06-10 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090610 Termination date: 20130113 |