CN102408888B - Rock breaking drilling fluid - Google Patents
Rock breaking drilling fluid Download PDFInfo
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- CN102408888B CN102408888B CN 201010289552 CN201010289552A CN102408888B CN 102408888 B CN102408888 B CN 102408888B CN 201010289552 CN201010289552 CN 201010289552 CN 201010289552 A CN201010289552 A CN 201010289552A CN 102408888 B CN102408888 B CN 102408888B
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Abstract
The invention relates to rock breaking drilling fluid, which comprises the following components in percentage by weight: 3 to 5 percent of sodium bentonite, 0.2 to 0.5 percent of FCLS, 0.3 to 0.5 percent of XY-27, 0.2 to 0.5 percent of JT-888, 0.2 to 0.3 percent of FA-367, 0.4 to 0.6 percent of XC biopolymer, 0.2 to 0.5 percent of WGP and the balance of water, wherein the FCLS is ferrochrome lignosulfonate; JT-888 is a carboxylic acid derivative; the FA-367 is a zwitterionic polymer tackifying coating agent; the XC biopolymer is xanthan gum; the XY-27 is a zwitterionic polymer viscosity reducer; and the WGP is a stable well wall rock breaking agent. The rock breaking drilling fluid can break rocks quickly, the stability of a well wall is facilitated, the mechanical drilling speed of drilling a well by clear water is improved by over 23.31 percent, and the improved amplitude is obvious.
Description
Technical field
The present invention relates to a kind of rock-breaking and well-drilling liquid.
Background technology
The petroleum engineering operation to as if be imbedded in the dark rocks of underground thousands of rice, rock breaking efficiency is the important technological problems in the petroleum drilling, what its embodied is drilling speed; And to bore in the drilling process and run into multiple bad ground, there is reservoir pressure, the ground layer state, uncertain factors such as lithology and the strata division degree of depth, the complexcase of down-hole are difficult to expect especially, the difficulty of handling is also increasing, bore under the deep well high pressure and meet the hardpan mud shale, soft shale, when sticking shale and swelling shale, this class stratum is easy to the generation that hydration swelling causes the down-hole complex accident, especially at western deep drilling, it is particularly outstanding bore to meet in front of the mountains in the strong stress structure and big section mud shale well section process the performance of borehole well instability problem, seriously restricted drilling speed, drilling speed is the key factor that influences oil field prospecting and development benefit, improve drilling speed and can reduce drilling cost significantly, accelerating the exploratory development process, also is the problem that presses for solution in the deep-well ultra deep well drilling process.Simultaneously, the raising of drilling speed can reduce the time that drilling fluid soaks hydrocarbon zone, reduces drilling fluid to reservoir damage caused, is conducive to find hydrocarbon zone and increases substantially recovery ratio.
Summary of the invention
The purpose of this invention is to provide a kind of rock-breaking and well-drilling liquid, rock-breaking and well-drilling liquid can effectively reduce formation rock intensity moment and be conducive to the drilling liquid technology system of wellbore stability, reduce the borehole wall and collapse, significantly improve drilling speed, thereby can reduce drilling cost, quickening exploratory development process.Efficient rock-breaking drilling fluid composition: 100%, 3～5% sodium bentonite, 0.2～0.5%FCLS, 0.3～0.5%XY-27,0.2～0.5%JT-888,0.2～0.3%FA-367,0.4～0.6%XC biological polymer, 0.2～0.5%WGP and excess water by weight.
(2) FCLS is feero-chromo-lignosulfonate;
(3) JT-888 is carboxylic acid derivative;
(4) FA-367 is amphoteric ion polymer tackify coating agent;
(5) the XC biological polymer is xanthan gum;
(6) XY-27 is the amphoteric ion polymer viscosity-depression agent.
(7) WGP is the broken rock agent of a kind of stabilizing borehole.
Description of drawings
Wherein (a) simple stress test (b) triaxial stress test of Fig. 1 soak time vs core intensity.
Embodiment
Raw material:
(1) sodium bentonite, Central Plains, Henan Province mining industry company limited.
(2) FCLS is feero-chromo-lignosulfonate, the Shandong north chemical industry of gold company limited.
(3) JT-888 is carboxylic acid derivative, Beijing gold seashore auxiliary agent.
(4) FA-367 is amphoteric ion polymer tackify coating agent, gold seashore auxiliary reagent factory, Beijing.
(5) the XC biological polymer is xanthan gum, Hebei Xinhe Biologicgal Chemical Co., Ltd.
(6) (synthesizing formula is: a kind of stabilizing borehole efficient rock-breaking agent (WGP) in WGP---efficient rock-breaking agent, this stabilizing borehole efficient rock-breaking agent (WGP) comprises the solution, the sulfydryl polyether glycol of mass fraction 20-40 part, the sulfosuccinate dioctyl ester of mass fraction 30-40 part, sulphonating agent, normal hexane and the pH value conditioning agent of mass fraction 16-24 part of phosphorus oxychloride (POCl3) of concentration 20% of water, mass fraction 50-65 part of mass fraction 80-100 part vegetable-protein, mass fraction 180-200 part), China Petroleum Group Drilling Engineering Technology Research Institute's development.
(7) amphoteric ion polymer viscosity-depression agent, XY-27, the poly-prosperous chemical industry in Shandong company limited.
Embodiment 1
3% sodium bentonite, 0.2% feero-chromo-lignosulfonate, 0.3% amphoteric ion polymer viscosity-depression agent, 0.2% carboxylic acid derivative, 0.2% amphoteric ion polymer tackify coating agent, 0.4% xanthan gum, 0.2%WGP and surplus are water.
Embodiment 2
5% sodium bentonite, 0.5% feero-chromo-lignosulfonate, 0.5% amphoteric ion polymer viscosity-depression agent, 0.5% carboxylic acid derivative, 0.3% amphoteric ion polymer tackify coating agent, 0.6% xanthan gum, 0.5%WGP and surplus are water.
Embodiment 3
4% sodium bentonite, 0.4% feero-chromo-lignosulfonate, 0.4% amphoteric ion polymer viscosity-depression agent, 0.3% carboxylic acid derivative, 0.2% amphoteric ion polymer tackify coating agent, 0.5% xanthan gum, 0.4%WGP and surplus are water.
One, efficient rock-breaking property of drilling fluid
1, efficient rock-breaking drilling fluid soak time is to the influence of core intensity
Adopt single shaft, triaxial stress experiment test core adding and do not adding the variation of soaking different time core intensity in the efficient rock-breaking agent drilling fluid respectively.
As can be seen from Figure 1, core does not soak in adding the drilling fluid of WGP, and its core intensity reduces gradually along with the prolongation of soak time; When core soaks in the efficient rock-breaking drilling fluid, changing down is faster along with the increase of core soak time for core intensity.The simple stress test result shows core intensity minimum when soak time reaches 30s; The triaxial stress test result shows that core soaks in the drilling fluid of 0.5%WGP, adopt the 10MPa confined pressure, core intensity flex point occurs at 60s, increases confined pressure to 20MPa, core intensity minimum value will occur at 20s, is conducive to the effectively broken rock fast in the drilling process this moment.
2, the efficient rock-breaking drilling fluid is to the influence of wellbore stability
Utilize the simple stress experiment test natural core in the WGP drilling fluid, soak the changing conditions of core intensity behind the 12h, test result is as shown in the table.
The influence (soak time 12h) of the wellbore stability of table 1WGP
As can be seen from Table 1, the natural core of same rate of permeation soaks 12h respectively in the efficient rock-breaking drilling fluid of base slurry and 0.5%WGP, the core uniaxial compressive strength that the efficient rock-breaking drilling fluid soaks is obviously big than the core that the drilling fluid that does not add WGP soaks, and is conducive to wellbore stability.
3, the efficient rock-breaking drilling fluid is to the influence to rate of penetration
Experimental technique: utilize the drilling simulation experimental installation, in constant experiment the pressure of the drill, rotating speed and pump pressure parameter, adopt normal PDC drill bit, triangular polycrystalline diamond diamond head and tooth-wheel bit respectively, creep in different rock simulation drilling wells, obtain and add the actual speed index that creeps in efficient rock-breaking drilling fluid front and back.
Experiment parameter:
Choose suitable parameters such as constant the pressure of the drill, rotating speed and pump pressure according to the actual situation of creeping into.
Bit diameter: 92mm; The pressure of the drill: 13.62KN;
Rotating speed: 100rpm; Bit pressuredrop: 1MPa,
Efficient rock-breaking agent and drilling fluid proportioning (1: 500)
By under constant experiment the pressure of the drill, rotating speed and pump pressure parameter condition, adopt conventional PDC drill bit, triangular polycrystalline diamond diamond head and tooth-wheel bit respectively, creep in different rock simulation drilling wells, simulate drilling well with clear water and 0.5%WGP efficient rock-breaking drilling fluid, influence the results are shown in Table 2.The result shows: efficient rock-breaking agent (0.5%) is very remarkable to the amplitude of the rate of penetration raising of wash boring.
Add the influence of the drilling speed of 0.5%WGP in table 2 clear water
Annotate: Kd represents the rock drillability index
Fast drilling fluid technology rig-site utilization
The fast drilling fluid technology is carried out test in place at basin, Hailaer Wu126-88Jing, has obtained significant effect.The main geology characteristic in basin, Hailaer is stratum, middle and upper part clay mineral content height, and pulping is serious, easily forms the mud ring, causes serious blocked portion; The stratum, middle and lower part is based on glutenite, and drillability is poor, abrasive property is strong; The borehole wall easily takes place and collapses in understratum smectite content height, and it is serious to fall piece.At the challenge that the Hailaer block exists, adopt the fast drilling fluid technology to carry out on-the-spot raising rate of penetration test at basin, Hailaer Wu126-88Jing.Fast drilling fluid efficiently solves that black 126-88 well middle and upper part well section pulping is serious, middle and lower part well section rock drillability is poor, the problem of lower well section borehole well instability, the process of making a trip does not have blocked portion, test pit section hole diameter rule, it is remarkable to improve average rate of penetration, has reduced the cycle of creeping into effectively.
1, with the contrast of offset well wellbore quality
The district is surveyed owing to the geologic condition complexity in the Hailaer, and the borehole wall easily collapses, and causes well radius variations bigger, has " sugarcoated haws on a stick " well.The layer position that well is bigger mainly is that the drifting sand layer of Yi Min group, the big mill of microfracture growth turn the glutenite of river group and copper alms bowl mausoleum group loose cementation.Statistics basin, 2001～2004 years Hailaers Bel's down warping region Wu Erxun depression exploratory area is total to 61 mouthfuls of drilling wells, and diameter enlargement ratio is 12.31%; Diameter enlargement ratio was 10.93% with surveying 16 mouthfuls of wells of district's drilling well in 2007; Diameter enlargement ratio was 12.24% with surveying 13 mouthfuls of wells of district's drilling well in 2008; And the fast drilling fluid technology only is 3.01% in the diameter enlargement ratio of black 126-88 well test pit section, test pit section hole diameter rule, and operations such as completion logging and running casing well cementation are smooth, and reduced on average significantly and crept into the cycle (seeing Table 3).The test-results of fast drilling fluid technology shows that this technology has stronger inhibition caving-preventing ability, solves superficial part ground mfs layer suction undergauge and middle deep mud shale effectively and degrades problems such as piece collapses.
Table 3 test pit and offset well technical indicator statistics
2, with the contrast of offset well average rate of penetration
Contrast offset well Wu122-102Jing and the Wu126-91Jing of Wu126-88Jing belong to basin, Hailaer Bel's down warping region Wu Erxun southern east slope belt structure that caves in together, and stratigraphic structure is similar.Wu126-88Jing is consistent with contrast offset well hole structure, pressure factor, drilling parameter and bit type selection, and used drilling fluid system all is both sexes compound ion drilling fluid system.
The actual well depth of Wu126-88Jing is 2633m, and finishing drilling layer position is copper alms bowl mausoleum group, and the cycle of creeping into is 14 days 12 hours, shortens 6 days 14 hours on year-on-year basis.The actual well depth of offset well Wu126-91Jing is 2605.00m, and finishing drilling layer position is the Nan Tun group, and the cycle of creeping into is 24 days 2h, and Wu126-88Jing has shifted to an earlier date 9 days 14 hours than Wu126-91Jing; The actual well depth of offset well Wu122-102Jing is 2370m, and finishing drilling layer position is Nan Tun group, and the cycle of creeping into is 16 days, and Wu126-88Jing is creeping into than Wu122-102Jing under the prerequisite of 263m more, has shifted to an earlier date 1 day 12 hours than the Wu122-102Jing cycle of creeping into.
Wu126-88Jing is added up according to identical layer position (Yi Min organizes, grinds greatly river group (big two sections, big a section) and Nan Tun group (Nan Erduan, Nan Yiduan)) corresponding rate of penetration with offset well Wu122-102Jing, Wu126-91Jing, the results are shown in Table 4.Under the prerequisite of drilling parameter, property of drilling fluid basically identical, average rate of penetration improves more than 23.31%.
The corresponding rate of penetration statistics with offset well identical layer position of table 4 Wu126-88Jing
Claims (1)
1. rock-breaking and well-drilling liquid, it is characterized in that: 100%, 3～5% sodium bentonite, 0.2～0.5%FCLS, 0.3～0.5%XY-27,0.2～0.5%JT-888,0.2～0.3%FA-367,0.4～0.6%XC biological polymer, 0.2～0.5%WGP and excess water by weight;
FCLS is feero-chromo-lignosulfonate;
JT-888 is carboxylic acid derivative;
FA-367 is amphoteric ion polymer tackify coating agent;
The XC biological polymer is xanthan gum;
XY-27 is the amphoteric ion polymer viscosity-depression agent;
WGP is the broken rock agent of a kind of stabilizing borehole, is made up of the phosphorus oxychloride solution of the concentration 20% of the water of 80-100 part vegetable-protein, 180-200 part, 50-65 part, the sulfydryl polyether glycol of 20-40 part, the sulfosuccinate dioctyl ester of 30-40 part, sulphonating agent, normal hexane and the pH value conditioning agent of 16-24 part by mass parts.
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| CN 201010289552 CN102408888B (en) | 2010-09-21 | 2010-09-21 | Rock breaking drilling fluid |
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| CN 201010289552 CN102408888B (en) | 2010-09-21 | 2010-09-21 | Rock breaking drilling fluid |
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| CN102408888B true CN102408888B (en) | 2013-07-03 |
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| CN105219363A (en) * | 2014-06-20 | 2016-01-06 | 成都棕通石油配件有限公司 | Fast drilling mud |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1350047A (en) * | 2000-10-25 | 2002-05-22 | 宋福如 | High-temperature viscosity reducer for drilling fluid and its production process |
| CN101126017A (en) * | 2006-08-15 | 2008-02-20 | 中国石油天然气集团公司 | Insulating liquid for injecting cement in oil well |
| CN101186812A (en) * | 2007-12-12 | 2008-05-28 | 中国石油集团钻井工程技术研究院 | Fast drilling agent formulation and preparation technique thereof |
| WO2009137407A2 (en) * | 2008-05-05 | 2009-11-12 | M-I L.L.C. | Methods and aqueous based wellbore fluids for reducing wellbore fluid loss and filtrate loss |
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- 2010-09-21 CN CN 201010289552 patent/CN102408888B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1350047A (en) * | 2000-10-25 | 2002-05-22 | 宋福如 | High-temperature viscosity reducer for drilling fluid and its production process |
| CN101126017A (en) * | 2006-08-15 | 2008-02-20 | 中国石油天然气集团公司 | Insulating liquid for injecting cement in oil well |
| CN101186812A (en) * | 2007-12-12 | 2008-05-28 | 中国石油集团钻井工程技术研究院 | Fast drilling agent formulation and preparation technique thereof |
| WO2009137407A2 (en) * | 2008-05-05 | 2009-11-12 | M-I L.L.C. | Methods and aqueous based wellbore fluids for reducing wellbore fluid loss and filtrate loss |
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