CN101955763B - High pressure-resistant leak stoppage agent and leak stoppage slurry containing same - Google Patents
High pressure-resistant leak stoppage agent and leak stoppage slurry containing same Download PDFInfo
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Abstract
The invention relates to a high pressure-resistant leak stoppage agent and leak stoppage slurry containing the same. The high pressure-resistant leak stoppage agent consists of the following components in percentage by mass: 25.0 to 27.0 percent of soybean particles, 31.0 to 32.0 percent of walnut shell flour, 7.1 to 7.5 percent of vermiculite, 2.1 to 2.5 percent of peanut hull meal, 22.0 to 22.5 percent of cement and 10.0 to 11.0 percent of flocculation coating agent LHB-105 for drilling fluid. The leak stoppage slurry consists of base slurry and the high pressure-resistant leak stoppage agent, wherein 3 to 9 grams of high pressure-resistant leak stoppage agent is added into every 100 milliliters of base slurry. The leak stoppage agent and the leak stoppage slurry stop leaking by combining chemical leak stoppage with particle bridging leak stoppage, so that the technical problems of aperture leak, crack leak and fracture leak under a well can be solved. The leak stoppage agent and the leak stoppage slurry are suitable for severe well leakage caused by a pore formation, a crack formation, a long-section broken formation and the like and can be applied to leak layer construction of which the leak position is difficultly determined.
Description
Technical field
The plugging agent that the present invention relates to use in the oil exploration drilling, particularly a kind of anti-high pressure leaking stoppage agent and contain the leak stopping slurry of described anti-high pressure leaking stoppage agent.
Background technology
All exist to some extent leakage in the Chinese Petroliferous drilling process, particularly even more serious when fissured formation creeps into.Therefore must implement effective drilling well leakproof, leakage stopping technology, be patching materials and implement the indispensable basic substance of this technology.Most widely used general, lower-cost patching materials is the bridge joint leak stopping at present.Conventional bridge joint blocking method is at the scene in the implementation process, the leak stopping success ratio is 40%～60% only, and analyze its reason and mainly contain the following aspects: 1. drop ply crack openings size is large, and the patching materials particle diameter is little, particularly the hard particle materials particle diameter is little, is difficult to build bridge in the crack form bridging plug.2. the crack openings size is little, during the bridge joint leak stopping, the macrobead material forms the phenomenon of sealing up a door at crack mouth place, having hindered smaller material enters, form bridging plug, blocked on the surface, but in follow-up wellbore construction because of drilling tool collision, liquid stream wash away, make a trip draw extensions, under the suction that pulls out of hole etc. acts on, the macrobead material of sealing up a door breaks away from the crack mouth, and again leakage occurs.
So in drilling engineering, sometimes because can not accurately grasp fracture width and the pore dimension on leakage stratum, can't preferred and definite plugging agent prescription, thus increased the uncertainty of successful construction, reduced the leak stopping success ratio.And because the existence of more patching materials, not only cause the too high of viscosity and be unfavorable for pumping, the actual application value of forfeiture site operation, and cause the increase of on-the-spot labour intensity.
Summary of the invention
For this reason, technical problem to be solved by this invention is to provide a kind of anti-high pressure leaking stoppage agent that can solve the property leakage of slit, down-hole, fractured leakage and tomography leakage, and a kind of leak stopping slurry that contains described anti-high pressure leaking stoppage agent is provided.
For solving the problems of the technologies described above, the present invention is achieved through the following technical solutions: a kind of anti-high pressure leaking stoppage agent, described anti-high pressure leaking stoppage agent is comprised of with flocculation coating agent LHB-105 soya bean particle, walnut shell flour, vermiculite, peanut hull meal, cement and drilling fluid, and the quality percentage composition is: the soya bean particle is 25.0～27.0%, walnut shell flour is 31.0～32.0%, vermiculite is 7.1～7.5%, peanut hull meal is 2.1～2.5%, cement is 22.0～22.5%, drilling fluid is 10.0～11.0% with the coating agent LHB-105 that flocculates.
Above-mentioned anti-high pressure leaking stoppage agent, soya bean particle are 26%, walnut shell flour is 31.5%, vermiculite is 7.3%, peanut hull meal is 2.3%, cement is 22.3%, drilling fluid is 10.6% with flocculation coating agent LHB-105.
Above-mentioned anti-high pressure leaking stoppage agent, described soya bean particle, described walnut shell flour, described vermiculite and described peanut hull meal are all more than or equal to 10 orders.
Above-mentioned anti-high pressure leaking stoppage agent, described vermiculite is the 10-20 order.
Above-mentioned anti-high pressure leaking stoppage agent, described peanut hull meal is the 15-20 order.
A kind of leak stopping slurry that contains above-mentioned anti-high pressure leaking stoppage agent, described leak stopping slurry is comprised of base slurry and described anti-high pressure leaking stoppage agent, and the described anti-high pressure leaking stoppage agent of adding in per 100 milliliters of base slurries is the 3-9 gram.
A kind of leak stopping slurry that contains above-mentioned anti-high pressure leaking stoppage agent, described leak stopping slurry is comprised of described anti-high pressure leaking stoppage agent, compound leakage stop agent FDJ, drill-feeding plugging agent SDL and base slurry, add-on in per 100 milliliters of base slurries is calculated: described anti-high pressure leaking stoppage agent is the 5-9 gram as 3-9 gram, described compound leakage stop agent, and described drill-feeding plugging agent is the 3-6 gram.
Above-mentioned leak stopping slurry, the add-on in per 100 milliliters of base slurries is calculated: described anti-high pressure leaking stoppage agent as 4 grams, described compound leakage stop agent FDJ as 6 grams, described drill-feeding plugging agent SDL is 5 grams.
Above-mentioned leak stopping slurry, the add-on in per 100 milliliters of base slurries is calculated: described anti-high pressure leaking stoppage agent as 3 grams, described compound leakage stop agent FDJ as 9 grams, described drill-feeding plugging agent SDL is 3 grams.
Above-mentioned leak stopping slurry, the add-on in per 100 milliliters of base slurries is calculated: described anti-high pressure leaking stoppage agent as 4 grams, described compound leakage stop agent FDJ as 5 grams, described drill-feeding plugging agent SDL is 6 grams.
Technique scheme of the present invention has the following advantages compared to existing technology:
(1) chemical plugging and the method that the bridge joint leak stopping combines have been adopted in the anti-high pressure leaking stoppage agent of the present invention, are a kind of compound chemical gels, compare with single chemical gel or single bridge joint plugging agent, and higher blocking ability and bearing capacity are arranged; Gelation time is adjustable, and the scene can be different according to downhole temperature, control gelation time by the dosage of regulating linking agent; Can according to the size of Underwell leakage severity and leakage channel opening size and the composite use of bridge joint plugging agent of different-grain diameter, improve leak stopping success ratio and plugging effect; In three leak stopping, show good plugging effect, all disposable successes of front twice leak stopping, twice success of constructing for the third time, average disposable leak stopping success ratio reaches 75%.(2) the anti-high pressure leaking stoppage agent of the present invention is by different polymkeric substance and the multiple granulometric composition that works build bridge support, dilatational strain, adopt the chemical plugging leak stopping that combines with the leak stopping of particle bridge joint, the method that belongs to a kind of polymer class gelling is controlled the novel resistance to compression plugging agent of leakage.Lab-evaluation shows, the anti-high pressure leaking stoppage agent of the present invention has certain shear thinning behavior, visco-elasticity and higher ultimate compression strength, the time that forms gel is adjustable, and can be according to the situation of drop ply, the allotment granular size, reach the effect of shutoff, be applicable to the severe circulation loss that pore formation, fissured formation, long section broken formation etc. cause, and can be used for the bad definite drop ply construction of leak position.(3) the anti-high pressure leaking stoppage agent of the present invention can solve the anti-high pressure leaking stoppage agent of the property leakage of slit, down-hole, fractured leakage and tomography leakage, remedy other plugging agent build bridge, defective on crosslinked; In the situation of anti-high pressure leakage, reach preferably effect and environment protecting.
Description of drawings
Fig. 1 is that the anti-high pressure leaking stoppage agent of the present invention dosage is on the impact of gel time;
Fig. 2 is that temperature is on the impact of the anti-high pressure leaking stoppage agent of the present invention gel time.
Embodiment
Embodiment 1 (anti-high pressure leaking stoppage agent performance evaluation of the present invention)
The anti-high pressure leaking stoppage agent of present embodiment is comprised of with flocculation coating agent LHB-105 soya bean particle, walnut shell flour, vermiculite, peanut hull meal, cement and drilling fluid, the quality percentage composition is: 10 purpose soya bean particles 26%, 10 purpose walnut shell flours 31.5%, 10 purpose vermiculites 7.3%, 10 purpose peanut hull meals 2.3%, cement 22.3% and drilling fluid prepare anti-high pressure leaking stoppage agent with the ratio of flocculation coating agent LHB-10510.6%, carry out following performance evaluation after the mixing and stirring:
1. multiviscosisty experiment
This experiment is carried out at the grout multiviscosity meter, need to be static because of experiment, and adopt the method for surveying a denseness every two hours to test, the multiviscosisty experimental formula is as follows:
The anti-high pressure leaking stoppage agent of aquation slope soil paste+3% of 1#:6% (6% aquation slope soil paste represent in per 100 ml waters to add the base that 6 gram slopes soil, aquation form after 24 hours and starch; 3% anti-high pressure leaking stoppage agent represents to add the anti-high pressure leaking stoppage agent of 3 grams in per 100 milliliters of base slurries);
The anti-high pressure leaking stoppage agent of aquation slope soil paste+4% of 2#:6% (6% aquation slope soil paste represent in per 100 ml waters to add the base that 6 gram slopes soil, aquation form after 24 hours and starch; 4% anti-high pressure leaking stoppage agent represents to add the anti-high pressure leaking stoppage agent of 4 grams in per 100 milliliters of base slurries);
The anti-high pressure leaking stoppage agent of aquation slope soil paste+5% of 3#:6% (6% aquation slope soil paste represent in per 100 ml waters to add the base that 6 gram slopes soil, aquation form after 24 hours and starch; 5% anti-high pressure leaking stoppage agent represents to add the anti-high pressure leaking stoppage agent of 5 grams in per 100 milliliters of base slurries);
The anti-high pressure leaking stoppage agent of aquation slope soil paste+6% of 4#:6% (6% aquation slope soil paste represent in per 100 ml waters to add the base that 6 gram slopes soil, aquation form after 24 hours and starch; 6% anti-high pressure leaking stoppage agent represents to add the anti-high pressure leaking stoppage agent of 6 grams in per 100 milliliters of base slurries);
The anti-high pressure leaking stoppage agent of aquation slope soil paste+6% of 5#:5% (5% aquation slope soil paste represent in per 100 ml waters to add the base that 5 gram slopes soil, aquation form after 24 hours and starch; 6% anti-high pressure leaking stoppage agent represents to add the anti-high pressure leaking stoppage agent of 6 grams in per 100 milliliters of base slurries);
The not anti-high pressure leaking stoppage agent of aquation slope soil paste+5% of 6#:6% (6% not aquation slope soil paste represent in per 100 ml waters to add the bases slurry that 6 gram slopes soil form; 5% anti-high pressure leaking stoppage agent represents to add the anti-high pressure leaking stoppage agent of 5 grams in per 100 milliliters of base slurries);
The not anti-high pressure leaking stoppage agent of aquation slope soil paste+6% of 7#:6% (6% not aquation slope soil paste represent in per 100 ml waters to add the bases slurry that 6 gram slopes soil form; 6% anti-high pressure leaking stoppage agent represents to add the anti-high pressure leaking stoppage agent of 6 grams in per 100 milliliters of base slurries);
The not anti-high pressure leaking stoppage agent of aquation slope soil paste+7% of 8#:6% (6% not aquation slope soil paste represent in per 100 ml waters to add the bases slurry that 6 gram slopes soil form; 7% anti-high pressure leaking stoppage agent represents to add the anti-high pressure leaking stoppage agent of 7 grams in per 100 milliliters of base slurries);
The not anti-high pressure leaking stoppage agent of aquation slope soil paste+8% of 9#:6% (6% not aquation slope soil paste represent in per 100 ml waters to add the bases slurry that 6 gram slopes soil form; 8% anti-high pressure leaking stoppage agent represents to add the anti-high pressure leaking stoppage agent of 8 grams in per 100 milliliters of base slurries);
The not anti-high pressure leaking stoppage agent of aquation slope soil paste+5% of 10#:8% (8% not aquation slope soil paste represent in per 100 ml waters to add the bases slurry that 8 gram slopes soil form; 5% anti-high pressure leaking stoppage agent represents to add the anti-high pressure leaking stoppage agent of 5 grams in per 100 milliliters of base slurries).
Experimental result is as shown in table 1:
Table 1 multiviscosisty experimental result
As can be seen from Table 1, the leak stopping slurry denseness that has just prepared illustrates that this slurry has good pumpability between 10～25BC.The anti-high pressure leaking stoppage agent of the present invention can be formed with the gelinite of a fixed structure in 4h in aquation slope soil paste, in aquation slope soil paste not, also can form gelinite in 16h, when slope soil content reaches 7%～8%, can form gelinite in 4h.(annotate: general denseness can form colloid about 50BC, and the denseness of 6# is along with the increase denseness increase of time is little, and the possibility that forms colloid in 16h is little, so there is no necessity that continuation is down done; 7# too.Along with gel has appearred in the increase 8# of clay content and resistance to compression plugging agent dosage, that 9# gel that also is bound to occur, 10# gel just occurred at 6h.)
2. normal temperature current downflow experiment
Experimental technique and the instrument when surveying the grout degree of mobilization adopted in experiment.Experimental technique: the truncated cone circle mould of certain specification is placed on the sheet glass of horizontal positioned, the slurry that stirs is injected rapidly in the truncated cone circle mould, use doctor blade, truncated cone circle mould is mentioned by vertical direction, appoint slurry to flow at sheet glass, to 30 seconds, measure the maximum diameter of trickling part mutually perpendicular both direction with ruler, average as the degree of mobilization of slurry.Experimental data sees Table 2:
Table 2 degree of mobilization experimental data
Annotate: the implication of table 2 prescription to the table 7, take "+4% anti-high pressure leaking stoppage agent of 4% base slurry " as the example explanation: 4% base is starched the base slurry that adds 4 gram slope soil, aquation formation in 24 hours in per 100 ml waters of expression, and 4% anti-high pressure leaking stoppage agent represents that adding 4 in per 100 milliliters of base slurries restrains anti-high pressure leaking stoppage agent.
Can find out that from experimental data in the situation that the leak stopping slurry has just configured, degree of mobilization is better, under certain differential pressure action, can enter the stratum, along with the increase of time, degree of mobilization slowly reduces, and forms at last gelinite and stops up drop ply.
3. temperature and dosage are on forming the impact of gel time
Because dosage and temperature are larger on the impact of crosslinking reaction, therefore investigated the anti-high pressure leaking stoppage agent of New High Pressure Lost Circulation Material forms gel in different dosages, differing temps situation time, as depicted in figs. 1 and 2, in Fig. 1, X-coordinate represents the dosage of anti-high pressure leaking stoppage agent, and ordinate zou represents the time; In Fig. 2, X-coordinate represents temperature, and ordinate zou represents the time.By Fig. 1 and Fig. 2 as can be known, with the dosage of anti-high pressure leaking stoppage agent and the increase of temperature, gelling is shortened gradually, the immobilising gel of final formation, and plugging agent at high temperature also can form gelinite, when carrying out plugging operations, and the time that can form by the adjustment control gelling to its dosage.
4. pressure-bearing experiment
(1) bearing capacity under the differing temps
This effects the bearing capacity of plugging agent after the maintenance of differing temps section, pressure-bearing experiment is to make pressing machine by oneself with instrument.The pressure-bearing experimental technique: the 500g sand of in cup, packing into (20～40 order), gently with the casting bed Zhenping, then pour ready leak stopping slurry into, be forced into required pressure, timing 30min surveys filter loss.Experimental data sees Table 3:
Table 3 differing temps is on the impact of bearing capacity
Can find out that from experimental data this plugging agent bearing capacity can reach more than the 10MPa, and can form high-intensity screen layer, improve the bearing capacity on stratum.
(2) time of repose is on the impact of bearing capacity
In numerous patching materialss, owing to soak for a long time in drilling fluid, a lot of patching materialss have all been lost leak stopping capability, and indoor by plugging agent is estimated its bearing capacity under different time of repose, evaluation result is as shown in table 4 below:
Table 4 time of repose is on the impact of bearing capacity
Can find out that from experimental data along with the increase of time, because the crosslinked polymer effect, its bearing capacity strengthens gradually, can greatly improve the success ratio of leak stopping.
5. the gel test in different densities base slurry
This effects add the gel time in heavy sizing of plugging agent at different densities, experimental data sees Table 5:
The gel time of table 5 different densities
Can find out from experimental data, anti-high pressure leaking stoppage agent at the sample pulp density greater than 1.5g/cm
3The time, fluidity of slurry is poor, is unfavorable for site pumping, at basic pulp density less than or equal to 1.5g/cm
3The time, can satisfy the site operation requirement.
6. the gel test under the 200r/m rotating speed
In order further to understand the gel situation of plugging agent, the spy investigates its gel situation under the rotating speed of 200r/m, and experimental data sees the following form 7:
Gel situation under the rotating speed of table 7200r/m
Can find out that from experimental data leak stopping is starched under whipped state, can not form gel, stir around less than ground can form gel.Therefore, when constructing at the scene, the preparation of leak stopping slurry must stir.
Certain well bores on December 31st, 2006 and reaches well cementation well depth 4190m, drills through the well reaming under the band centralizer after the electrical measurement, and reaming begins leakage (drilling fluid density 1.50g/cm to well depth 3887.10m
3), on average leak fast 24m
3/ h continues to draw to well depth 3890.48m, and well head loses and returns, and pulls out of hole to join the leak stopping of leak stopping slurry.
Join as required the leak stopping slurry, the described anti-high pressure leaking stoppage agent of adding in per 100 milliliters of basic slurries is that 4 gram %, the described compound leakage stop agent FDJ of adding are that 6 grams, the described drill-feeding plugging agent SDL of adding are 5 grams.Described anti-high pressure leaking stoppage agent is comprised of with flocculation coating agent LHB-105 soya bean particle, walnut shell flour, vermiculite, peanut hull meal, cement and drilling fluid, the quality percentage composition is: 10 purpose soya bean particles 26%, 10 purpose walnut shell flours 31.5%, 10 purpose vermiculites 7.3%, 10 purpose peanut hull meals 2.3%, cement 22.3% and drilling fluid prepare mixing and stirring with the ratio of flocculation coating agent LHB-10510.6%.
Be drilled into leak position down again, squeeze into above-mentioned leak stopping slurry 40m
3, inject drilling fluid 40m
3(on average leak fast 28.8m
3/ h), work being drilled into well depth 1997.14m circulation observation, leak fast 10.2m
3/ h, leakage drilling fluid 5.1m
3Rear leakage stops.The disposable success of leak stopping is not leaked in lower brill reaming to shaft bottom circulation.
Certain well is drilled into well depth 3499.67m and is hampered turn on pump circulation reaming, drilling fluid density 1.42g/cm under 08 day December in 2006
3Because more serious well slough appears in the down-hole, reaming is very difficult.Collapse under the control well, drilling fluid density is brought up to 1.46g/cm
3After, a section reaming is found leakage to well depth 3724.30m, and the continuation reaming is to well depth 3729.50m, and well head loses and returns, and pulls out of hole to join the leak stopping of leak stopping slurry.
Join as required the leak stopping slurry, the described anti-high pressure leaking stoppage agent of adding in per 100 milliliters of basic slurries is that 3 grams, the described compound leakage stop agent FDJ of adding are that 9 grams, the described drill-feeding plugging agent SDL of adding are 3 grams.Described anti-high pressure leaking stoppage agent is comprised of with flocculation coating agent LHB-105 soya bean particle, walnut shell flour, vermiculite, peanut hull meal, cement and drilling fluid, the quality percentage composition is: 10 purpose soya bean particles 25.5%, 10 purpose walnut shell flours 31%, 10 purpose vermiculites 7.5%, 10 purpose peanut hull meals 2.5%, cement 22.5% and drilling fluid prepare mixing and stirring with the ratio of flocculation coating agent LHB-10511%.
Lower polish drill rod is annotated leak stopping slurry 40m to well depth 3570.09m
3, leak fast 38.5m
3/ h rises to casing shoe, and circulation is observed, and leaks fast 13.8m
3/ h, closing well are just squeezing drilling fluid 0.6m
3, the vertical pressure drops to 1.5MPa by 2.0MPa, pulls out of hole and waits stifled 8 hours, and closing well is clamp-oned drilling fluid 1.6m
3(the vertical pressure drops to 0.7MPa by 2.2MPa).Under be drilled into well depth 3712.09m, circulation is observed aftereffect, leaks fast 2.6m
3/ h.Trip-out bit change, lower brill reaming to the shaft bottom (well depth 3988.56m) circulation do not leak, recover to creep into the disposable success of leak stopping.
Certain well arrives shaft bottom (4190m) in the two centralizer drifting reamings of band on January 9th, 2007, and drilling fluid density is progressively brought up to 1.54g/cm
3(control well slough), short distance rise and are drilled into well depth 3596.50m, and leakage when circulation is observed is leaked fast 20m
3/ h pulls out of hole and joins the leak stopping of leak stopping slurry.
Join as required the leak stopping slurry, the described anti-high pressure leaking stoppage agent of adding in per 100 milliliters of basic slurries is that 4 grams, the described compound leakage stop agent FDJ of adding are that 5 grams, the described drill-feeding plugging agent SDL of adding are 6 grams.Described anti-high pressure leaking stoppage agent is comprised of with flocculation coating agent LHB-105 soya bean particle, walnut shell flour, vermiculite, peanut hull meal, cement and drilling fluid, the quality percentage composition is: 40 purpose soya bean particles 26.5%, 30 purpose walnut shell flours 32.3%, 20 purpose vermiculites 7.1%, 15 purpose peanut hull meals 2.1%, cement 22.0% and drilling fluid prepare mixing and stirring with the ratio of flocculation coating agent LHB-10510.0%.
Lower polish drill rod is annotated leak stopping slurry 47m to well depth 3596.50m
3, replace into drilling fluid 34m
3, rise and be drilled into well depth 1980.05m, hang drilling fluid charge 40.7m
3Well head is discontented.Trip-out elicites static liquid level well depth 38m.Under be drilled into well depth 3540.83m, inject leak stopping slurry 43m
3, for drilling fluid 25.5m
3, work being drilled into well depth 1979.91m circulation observation, on average leak fast 3.0m
3/ h divides later on five closing wells to be co-extruded into drilling fluid 3.4m
3, well head voltage stabilizing 0.7MPa.Under drill through and do not leak, the leak stopping success.
Obviously, above-described embodiment only is for example clearly is described, and is not the restriction to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give all embodiments exhaustive.And the apparent variation of being extended out thus or change still are among the protection domain of the invention.
Claims (9)
1. anti-high pressure leaking stoppage agent, it is characterized in that, described anti-high pressure leaking stoppage agent is comprised of with flocculation coating agent LHB-105 soya bean particle, walnut shell flour, vermiculite, peanut hull meal, cement and drilling fluid, and the quality percentage composition is respectively: the soya bean particle is 25.0～27.0%, walnut shell flour is 31.0～32.0%, vermiculite is 7.1～7.5%, peanut hull meal is 2.1～2.5%, cement is 22.0～22.5%, drilling fluid is 10.0～11.0% with the coating agent LHB-105 that flocculates; Described soya bean particle, described walnut shell flour, described vermiculite and described peanut hull meal are all more than or equal to 10 orders.
2. anti-high pressure leaking stoppage agent according to claim 1 is characterized in that, the soya bean particle is 26%, walnut shell flour is 31.5%, vermiculite is 7.3%, peanut hull meal is 2.3%, cement is 22.3%, drilling fluid is 10.6% with flocculation coating agent LHB-105.
3. anti-high pressure leaking stoppage agent according to claim 1 is characterized in that, described vermiculite is the 10-20 order.
4. anti-high pressure leaking stoppage agent according to claim 1 is characterized in that, described peanut hull meal is the 15-20 order.
5. a leak stopping slurry that contains the arbitrary described anti-high pressure leaking stoppage agent of claim 1 to 4 is characterized in that, described leak stopping slurry is comprised of base slurry and described anti-high pressure leaking stoppage agent, and the described anti-high pressure leaking stoppage agent of adding in per 100 milliliters of base slurries is the 3-9 gram.
6. a leak stopping that contains the arbitrary described anti-high pressure leaking stoppage agent of claim 1 to 4 is starched, it is characterized in that, described leak stopping slurry is comprised of described anti-high pressure leaking stoppage agent, compound leakage stop agent FDJ, drill-feeding plugging agent SDL and base slurry, add-on in per 100 milliliters of base slurries is calculated: described anti-high pressure leaking stoppage agent is the 5-9 gram as 3-9 gram, described compound leakage stop agent, and described drill-feeding plugging agent is the 3-6 gram.
7. leak stopping according to claim 6 slurry is characterized in that, the add-on in per 100 milliliters of base slurries is calculated: described anti-high pressure leaking stoppage agent as 4 grams, described compound leakage stop agent FDJ as 6 grams, described drill-feeding plugging agent SDL is 5 grams.
8. leak stopping according to claim 6 slurry is characterized in that, the add-on in per 100 milliliters of base slurries is calculated: described anti-high pressure leaking stoppage agent as 3 grams, described compound leakage stop agent FDJ as 9 grams, described drill-feeding plugging agent SDL is 3 grams.
9. leak stopping according to claim 6 slurry is characterized in that, the add-on in per 100 milliliters of base slurries is calculated: described anti-high pressure leaking stoppage agent as 4 grams, described compound leakage stop agent FDJ as 5 grams, described drill-feeding plugging agent SDL is 6 grams.
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| US10266617B2 (en) | 2013-08-14 | 2019-04-23 | China Petroleum & Chemical Corporation | Cationic copolymer and use thereof in lost circulation additive |
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| CN102287162A (en) * | 2011-05-09 | 2011-12-21 | 白银有色集团股份有限公司 | Small fault leakage blocking method in drill hole |
| CN102251756B (en) * | 2011-06-22 | 2014-01-01 | 中国石油集团川庆钻探工程有限公司 | Mountain flour plugging method |
| CN102653673B (en) * | 2012-01-05 | 2014-05-14 | 中国石油天然气股份有限公司 | Biodegradable temporary plugging additive |
| CN104046345A (en) * | 2013-03-13 | 2014-09-17 | 中国石油天然气股份有限公司 | Petroleum engineering fiber composite pressure-bearing leak-stopping liquid and preparation method |
| CN111058796B (en) * | 2019-11-25 | 2021-11-09 | 西南石油大学 | Method for improving shale gas well oil layer casing well cementation quality |
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| JP2005113009A (en) * | 2003-10-08 | 2005-04-28 | Musashino Tsuchishitsu Chosa Kk | Water stop |
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| CN1084875A (en) * | 1992-09-30 | 1994-04-06 | 中南工业大学 | A kind of leakage blocking wall protective processing agent for well drilling |
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| JP特开2005-113009A 2005.04.28 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US10266617B2 (en) | 2013-08-14 | 2019-04-23 | China Petroleum & Chemical Corporation | Cationic copolymer and use thereof in lost circulation additive |
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