CN102031942B - On-site construction process of water base barite liquid plugging agent with heat sensitive characteristic - Google Patents
On-site construction process of water base barite liquid plugging agent with heat sensitive characteristic Download PDFInfo
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- CN102031942B CN102031942B CN 201010565602 CN201010565602A CN102031942B CN 102031942 B CN102031942 B CN 102031942B CN 201010565602 CN201010565602 CN 201010565602 CN 201010565602 A CN201010565602 A CN 201010565602A CN 102031942 B CN102031942 B CN 102031942B
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Abstract
The invention discloses an on-site construction process of a water base barite liquid plugging agent with a heat sensitive characteristic, and relates to the technical field of on-site plugging construction processes by plugging agents. The on-site construction process comprises the following steps: a, enabling a drilling tool to run in a well to a target well depth, rotating the drilling tool at the speed of 30rpm, and pumping in a required amount of plugging slurry; b, after the plugging slurry returns out of the drilling tool outlet, pulling the drilling tool out of the hole at the speed of 10m/min; c, waiting for more than 30 hours; and d, after waiting, shutting in the well and testing the pressure; and if bearing pressure is unsatisfactory, repeating the construction steps a-c, and adding a bridge plugging agent accounting for 5% by weight of the plugging slurry simultaneously when pumping in the plugging slurry until the bearing pressure is satisfactory. The invention solves the technical defect that the drill tool is liable to be stuck when the plugging slurry has strong heat sensitive characteristic in the prior art, and the invention has the advantage of safety in construction.
Description
Technical field
The present invention relates to adopt the on-the-spot blocking constructing process technical field of sealing agent, how exactly to relate to this sealing agent pump to the absorption well section with guarantee the construction technology of drilling tool safety.
Background technology
In the prior art, when adopting the sealing agent leak stopping, adopt usually down that the drill finish bar pumps into the leak stopping slurry to 10 ~ 50 meters distances more than the drop ply, after the leak stopping slurry all goes out drilling tool, work being drilled into more than the leak stopping slurry face, the crowded leak stopping of spraining of static or closing well.
Be CN1477275 as publication number, open day is the patent documentation on February 25th, 2004, a kind of boundary surface permeable deep-layer sealing agent construction method is disclosed, its process is that base treatment and cleaning → solution spraying → local structure are handled substantially, it is characterized in that basic unit should remove totally, remove stain, oil stain, graywall, scum silica frost etc.Concrete and cement products basic unit should be solid, smooth.If honeycomb, pitted skin, cracking, defective such as loose are arranged, then should repair in advance in accordance with regulations.Normal concrete and cement products surface or newly build concrete and cement products are washed away or wetting for good with prior water; For dirty concrete and cement products surface or at hot dry weather conditions, must wash away wetted surface for water, but not stay the puddle.Spraying should be from bottom to top during metope, about spraying, make forever lime set permeate whole working face sufficiently uniformly.During the spraying ground line, the little puddle on the cleaning face sprays lime set forever more earlier.For the junction between plane and facade or the facade, the bonding layer of spraying 150mm.On horizontal plane, each spraying should cover half of last spraying circle.During the spraying metope, from the bottom, use twice at the same area again.On vertical plane, if solution is past dirty, nozzle motion from the teeth outwards should double to carry out, and makes whole zone lid full, carries out once with same coverage scale more again.
But above-mentioned existing construction technology is not suitable for the site operation to the water base barite liquid sealing agent with sensitive characteristic, common leak stopping slurry, do not have a sensitive characteristic, safety problem with the said method fine solution leak stopping of energy and drilling tool, but the leak stopping slurry with thermal sensitive effect is not suitable for, and reason is that water base barite liquid sealing agent has sensitive characteristic, when producing interchange of heat with the stratum, the sealing agent variation of temperature has been accelerated one-tenth plug speed, thus easy especially bit freezing.
Summary of the invention
For solving the problems of the technologies described above, the present invention proposes a kind of site construction technology with water base barite liquid sealing agent of sensitive characteristic, adopt the present invention, solved with prior art and used the existing easy bit freezing technical problem of this sealing agent, have the advantage of construction safety.
The present invention realizes by adopting following technical proposals:
A kind of site construction technology with water base barite liquid sealing agent of sensitive characteristic is characterized in that step comprises:
A, following drilling tool by 30 rev/mins speed rotation drilling tool, pump into the leak stopping slurry of aequum to the purpose well depth;
B, after leak stopping slurry returns out the drilling tool outlet, by playing drilling tool on 10 meters/minute the speed;
C, time are blocked up more than 30 hours;
After d, time have been blocked up, the closing well pressure testing; If pressure-bearing does not reach requirement, repeat the a-c construction sequence, and when pumping into the leak stopping slurry, add the bridging plug sealing agent by leak stopping slurry mass percent 5%, reach requirement until pressure-bearing.
Among the described step a, described leak stopping slurry prescription by mass percentage is as follows:
Tap water: 23%-31.2%;
Zinc stearate: 0.3%-0.6%;
Drilling fluid sulfonation tannin extract: 0.5%-0.6%;
Blanc fixe: 68%-75.8%;
The preparation method is: put in the slurry tank of this well earlier by said ratio and account for half tap water of proportioning, be sequentially added into whole zinc stearates, whole sulfonation tannin extract and whole blanc fixes then, stirred 1-2 hour, and then add remaining second half the tap water of proportioning that accounts for, stirred again 2-3 hour.
Said tap water refers to meet the water of GB5749-85 city tap-water requirement.Said zinc stearate is that the employing standard No. is said zinc stearate in the HG/T 3667-2000 file.Said drilling fluid is that the employing standard No. is said drilling fluid sulfonation tannin extract in the SY/T 5091-93 file with the sulfonation tannin extract.Said blanc fixe is that the employing standard No. is said blanc fixe in the GB/T 5005-2001 file.
Among the described step b, adopt after the leak stopping slurry returns out drilling tool outlet 2 sides, by playing drilling tool on 10 meters/minute the speed.
Among the described step b, after leak stopping slurry all replaced out drilling tool, drilling tool played to the leak stopping slurries face 50 meters.
Among the described step c, described time is stifled to be adopted to sprain to press and wait stifled or do not sprain to press and wait stifledly, sprains to press and waits stifled referring to: when possessing the press strip spare of spraining, closing well is sprained, and to press 1.0MPa to wait stifled; The described pressure of not spraining is waited stifled referring to: when not possessing the press strip spare of spraining, leave standstill to wait and block up.
In the said steps d, described bridging plug sealing agent refers to the commodity that petroleum industry is commonly used: thin type bridging plug sealing agent.
Among the present invention, before the construction technology, carry out small-sized the checking in scene earlier and test and calculate at the scene:
Use density range to select formula rate according to the leak stopping slurry, carry out formula rate and check and adjust, finally determine the achievement formula rate;
Determine required leak stopping slurry amount of preparation by 50% one-tenth plug efficient;
Calculate various material usages according to required leak stopping slurry amount of preparation.
Compared with prior art, the beneficial effect that reaches of the present invention is as follows:
One, adopts the said a-d step of the present invention, the leak stopping slurry is carried out site operation, be particularly useful for the site operation to the barite sealing agent with sensitive characteristic, construction technology is simple, solved in the prior art existing when the leak stopping slurry has sensitive characteristic, the technological deficiency of bit freezing has the advantage of construction safety easily.
Two, among the present invention, prescription and the compound method of the leak stopping slurry that adopts, the leak stopping slurry that forms is through experimental verification, solved the existing compliance of sealing agent of the prior art strong, do not have temperature-sensitive synergistic effect, leak stopping success rate not high enough, in pit shaft, can not replace simultaneously cement paste to form the technological deficiency of fine and close stopper, have the advantage that the synergistic effect of strong, the high dehydration temperature-sensitive of compliance is remarkable, the leak stopping success rate is high.
Three, among the present invention, adopt after the leak stopping slurry returns out drilling tool outlet 2 sides, by playing drilling tool on 10 meters/minute the speed, and when leak stopping starch all replace out drilling tool after, drilling tool plays to the leak stopping slurries face 50 meters, has further avoided the generation of bit freezing phenomenon.
Four, among the present invention, when pumping into the leak stopping slurry, add 5% common thin type bridging plug sealing agent by mass percentage, can increase the flow resistance of sealing agent, prolong the time of staying of stifled slurry, obviously promote the plugging effect to large fracture.
The present invention is described in further detail below in conjunction with the specific embodiment.
The specific embodiment
Embodiment 1
The invention discloses a kind of site construction technology with water base barite liquid sealing agent of sensitive characteristic, step comprises:
A, following drilling tool by 30 rev/mins speed rotation drilling tool, pump into the leak stopping slurry of aequum to the purpose well depth;
B, after leak stopping slurry returns out the drilling tool outlet, trip out drilling tool by 10 meters/minute speed;
C, time are blocked up more than 30 hours;
After d, time have been blocked up, the closing well pressure testing; If pressure-bearing does not reach requirement, repeat the a-c construction sequence, and when pumping into the leak stopping slurry, add the bridging plug sealing agent by leak stopping slurry mass percent 5%, reach requirement until pressure-bearing.This technology is applied to imperial Gang001-27Jing, forms the barite stopper at well depth 4680 ~ 4650m place, has removed a complicated difficult problem of telling salt solution, following leakage on the multiple pressure power system well.
Embodiment 2
On the basis of embodiment 1, this technology is particularly useful for following leak stopping slurry is carried out site operation:
The said leak stopping slurry of a step prescription by mass percentage is as follows among the embodiment 1: 23%-31.2%; Zinc stearate: 0.3%-0.6%; Drilling fluid sulfonation tannin extract: 0.5%-0.6%; Blanc fixe: 68%-75.8%.
The preparation method is: put in the slurry tank of this well earlier by said ratio and account for half tap water of proportioning, be sequentially added into whole zinc stearates, whole sulfonation tannin extract and whole blanc fixes then, stirred 1-2 hour, and then add remaining second half the tap water of proportioning that accounts for, stirred again 2-3 hour.
Said tap water refers to meet the water of GB5749-85 city tap-water requirement.Said zinc stearate is that the employing standard No. is said zinc stearate in the HG/T 3667-2000 file.Said drilling fluid is that the employing standard No. is said drilling fluid sulfonation tannin extract in the SY/T 5091-93 file with the sulfonation tannin extract.Said blanc fixe is that the employing standard No. is said blanc fixe in the GB/T 5005-2001 file.
Embodiment 3
As the present invention's one preferred embodiments, among the described step b, adopt after the leak stopping slurry returns out drilling tool outlet 2 sides, by playing drilling tool on 10 meters/minute the speed.Among the described step b, after leak stopping slurry all replaced out drilling tool, drilling tool played to the leak stopping slurries face 50 meters.Among the described step c, described time is stifled to be adopted to sprain to press and wait stifled or do not sprain to press and wait stifledly, sprains to press and waits stifled referring to: when possessing the press strip spare of spraining, closing well is sprained, and to press 1.0MPa to wait stifled; The described pressure of not spraining is waited stifled referring to: when not possessing the press strip spare of spraining, leave standstill to wait and block up.In the said steps d, described bridging plug sealing agent refers to the thin type bridging plug sealing agent used always.All the other are with embodiment 1 or 2.
Embodiment 4
Preferred forms of the present invention is as follows, on the basis of embodiment 3, before the construction technology, carry out small-sized the checking in scene earlier and test and calculate: use density range to select formula rate according to the leak stopping slurry at the scene, carry out formula rate and check and adjust, finally determine the achievement formula rate; According to on-the-spot leak stopping slurry consumption, determine required leak stopping slurry amount of preparation by 50% one-tenth plug efficient; Calculate various material usages according to required leak stopping slurry amount of preparation.
Claims (7)
1. site construction technology with water base barite liquid sealing agent of sensitive characteristic is characterized in that step comprises:
A, following drilling tool by 30 rev/mins speed rotation drilling tool, pump into the leak stopping slurry of aequum to the purpose well depth;
B, after leak stopping slurry returns out the drilling tool outlet, by playing drilling tool on 10 meters/minute the speed;
C, time are blocked up more than 30 hours;
After d, time have been blocked up, the closing well pressure testing; If pressure-bearing does not reach requirement, repeat the a-c construction sequence, and when pumping into the leak stopping slurry, add the bridging plug sealing agent by leak stopping slurry mass percent 5%, reach requirement until pressure-bearing;
Among the described step a, described leak stopping slurry prescription by mass percentage is as follows: tap water: 23%-31.2%; Zinc stearate: 0.3%-0.6%; Drilling fluid sulfonation tannin extract: 0.5%-0.6%; Blanc fixe: 68%-75.8%; The preparation method is: put in the slurry tank of this well earlier by said ratio and account for half tap water of proportioning, be sequentially added into whole zinc stearates, whole sulfonation tannin extract and whole blanc fixes then, stirred 1-2 hour, and then add remaining second half the tap water of proportioning that accounts for, stirred again 2-3 hour.
2. the site construction technology with water base barite liquid sealing agent of sensitive characteristic according to claim 1, it is characterized in that: said tap water refers to meet the water of GB5749-85 drinking water sanitary standard requirement; Said zinc stearate is that the employing standard No. is said zinc stearate in the HG/T 3667-2000 file; Said drilling fluid is that the employing standard No. is said drilling fluid sulfonation tannin extract in the SY/T 5091-93 file with the sulfonation tannin extract; Said blanc fixe is that the employing standard No. is said blanc fixe in the GB/T 5005-2001 file.
3. the site construction technology with water base barite liquid sealing agent of sensitive characteristic according to claim 1 is characterized in that: among the described step b, adopt after the leak stopping slurry returns out drilling tool outlet 2 sides, by playing drilling tool on 10 meters/minute the speed.
4. the site construction technology with water base barite liquid sealing agent of sensitive characteristic according to claim 1 is characterized in that: among the described step b, after the leak stopping slurry all replaced out drilling tool, drilling tool played to the leak stopping slurries face 50 meters.
5. the site construction technology with water base barite liquid sealing agent of sensitive characteristic according to claim 1, it is characterized in that: among the described step c, described time is stifled adopt sprain press wait stifled or do not sprain press wait stifled, sprain to press and wait stifled referring to: when possessing the press strip spare of spraining, closing well is sprained and is pressed the 1.0MPa time stifled; The described pressure of not spraining is waited stifled referring to: when not possessing the press strip spare of spraining, leave standstill to wait and block up.
6. the site construction technology with water base barite liquid sealing agent of sensitive characteristic according to claim 1 is characterized in that: in the said steps d, described bridging plug sealing agent refers to the thin type bridging plug sealing agent used always.
7. the site construction technology with water base barite liquid sealing agent of sensitive characteristic according to claim 1 is characterized in that: at the scene before the construction technology, carry out earlier that the scene is small-sized checks experiment and calculate:
Use density range to select formula rate according to the leak stopping slurry, carry out formula rate and check and adjust, finally determine the achievement formula rate;
According to on-the-spot leak stopping slurry consumption, determine required leak stopping slurry amount of preparation by 50% one-tenth plug efficient;
Calculate various material usages according to required leak stopping slurry amount of preparation.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3724564A (en) * | 1971-11-12 | 1973-04-03 | Mobil Oil Corp | Technique for controlling lost circulation |
| CN1788066A (en) * | 2003-05-13 | 2006-06-14 | 普拉德研究及发展公司 | Well-treating method to prevent or cure lost-circulation |
| CN1928319A (en) * | 2005-10-17 | 2007-03-14 | 长庆石油勘探局 | Filling and leakage blocking process for cracking leak gravel |
| CN101638577A (en) * | 2009-08-28 | 2010-02-03 | 西安石油大学 | Natural feather plugging fiber used for drilling of oil and gas wells in oil fields and preparation method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6892814B2 (en) * | 2002-12-19 | 2005-05-17 | Halliburton Energy Services, Inc. | Cement compositions containing coarse barite, process for making same and methods of cementing in a subterranean formation |
-
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- 2010-11-30 CN CN 201010565602 patent/CN102031942B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3724564A (en) * | 1971-11-12 | 1973-04-03 | Mobil Oil Corp | Technique for controlling lost circulation |
| CN1788066A (en) * | 2003-05-13 | 2006-06-14 | 普拉德研究及发展公司 | Well-treating method to prevent or cure lost-circulation |
| CN1928319A (en) * | 2005-10-17 | 2007-03-14 | 长庆石油勘探局 | Filling and leakage blocking process for cracking leak gravel |
| CN101638577A (en) * | 2009-08-28 | 2010-02-03 | 西安石油大学 | Natural feather plugging fiber used for drilling of oil and gas wells in oil fields and preparation method thereof |
Non-Patent Citations (4)
| Title |
|---|
| 快捷堵漏剂的研制及应用;王多金等;《天然气工业》;20081130(第11期);第74-77页 * |
| 李翔.重晶石成塞技术排险情.《中国石油报》.2010,第1页. |
| 王多金等.快捷堵漏剂的研制及应用.《天然气工业》.2008,(第11期), |
| 重晶石成塞技术排险情;李翔;《中国石油报》;20100223;第1页 * |
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Effective date of registration: 20200914 Address after: 100007 Beijing, Dongzhimen, North Street, No. 9, No. Co-patentee after: CNPC Chuanqing Drilling Engineering Co.,Ltd. Patentee after: CHINA NATIONAL PETROLEUM Corp. Address before: The 1 section of No. 3 company Chuanqing Drilling Technology Information Office Chenghua District Green Road 610051 Chengdu City, Sichuan Province Patentee before: CNPC Chuanqing Drilling Engineering Co.,Ltd. |
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