CN1034081C

CN1034081C - Multifunctional bidirectional anti-collapse lubricant and production method thereof

Info

Publication number: CN1034081C
Application number: CN91107125A
Authority: CN
Inventors: 张兴礼; 贺鼎元; 张淑元; 李德贵; 林学文
Original assignee: CHUANXINAN MINING AREA SICHUAN
Current assignee: CHUANXINAN MINING AREA SICHUAN
Priority date: 1991-01-22
Filing date: 1991-01-22
Publication date: 1997-02-19
Anticipated expiration: 2006-01-22
Also published as: CN1052499A

Abstract

A multifunctional bidirectional anti-collapse lubricant is prepared from mineral oil, asphalt and activating agent. Inorganic salt and a modifying agent are taken as raw materials, and are respectively added into the A group of reaction kettles through a water jacket heater and a negative pressure batcher according to a certain proportion; the black viscous liquid is prepared by saponification reaction in the B group reaction kettle and the C group reaction kettle under certain pressure and temperature conditions, the strength of a polar pressure membrane of the drilling fluid can reach 256.8MPa through field application, the function of improving and increasing the strength of the polar pressure membrane is achieved, the self lubricating coefficient of the product reaches 0.068-0.07, the lubricating coefficient of the drilling fluid is changed into 0.07-0.10 when the product is added into the drilling fluid according to a certain amount, and the black viscous liquid has strong adaptability to collapse prevention, lubrication, sand carrying and stable performance of the drilling fluid.

Description

Multifunctional lubricant preventing landslide in two ways and production method thereof

Anti-collapse lubrication prescription of multi-function double-way of the present invention and production method thereof relate to the petroleum drilling technology field and are applicable to that various water-base drilling fluids are as anti-collapse, lubricated and unfreezing treatment additive.

According to well-drilling borehole stability mechanics principle, cause that the basic reason of wellbore instability is the yield strength that the well hoop stress has surpassed borehole wall scar, make borehole wall scar produce brittle fracture, as peel off, cave in, well expansion etc.Because wellbore instability can cause the complexity of down-hole and change.Cause multiple harm to drilling engineering, can not continue to creep into when serious, influence speed, quality and the cost of drilling well, even scrap well, cause drilling well to scrap.Show through drilling practice, correctly select type, composition, the performance of drilling fluid that hole stability is had important effect.At present in drilling project, make great efforts to do well anti-collapse, to control the work of collapsing be one of vital task of mud work, the active research caving-preventing sloughing drilling fluid system is produced and is fit to the cave in anti-collapse treatment additive of type of difference, then is the vital task of mud work.Existing domestic and international anti-caving agent for drilling fluid, using is the pitch based article more widely, its blending process adopts sulfonation method to make product more, but not the sulfonation method product can not directly add separately in the water-base drilling fluid again, and the weak point of its sulfonation method is to contain a large amount of sulfonated bodiess in the product, and its sulfonate radical itself easily brings pollution to environment, simultaneously at high temperature, sulfonated bodies can take place to decompose and the generation hydrogen sulfide under the high pressure, makes the easy hydrogen embrittlement fracture of drilling tool, and human and environment is brought harm.For this reason, such product is the needs that can not satisfy and adapt to fully drilling technique under the various bad ground conditions.

The purpose of this invention is to provide a kind of drilling fluid multifunctional lubricant preventing landslide in two ways product and production method thereof, use the product that present method is produced, only need by in a certain amount of adding drilling fluid mud, just the effect that petroleum drilling speed reaches safety drilling can be improved, and less environmental contamination can be in drilling process, reduced.

The design of multifunctional lubricant preventing landslide in two ways of the present invention and generation method thereof is to be raw material with mineral oil, pitch, promoting agent, inorganic salt and adjusting material, reaction modulation under certain temperature, pressure condition and a kind of black viscous fluid of forming.By Fig. 1, this product divides three process to finish: one, diesel oil adds A group reaction still by weight the ratio of (following all by weight) 0.4000～0.6120, heat up with the jacket heater circulation, the oxidized bitumen powder that adds 0.1480～0.2280 ratio then by the negative pressure blender loader, utilize equipment jacket heater and jet reactor 65～70 ℃ temperature, 3.5 circulating reaction is 2 hours under the pressure condition of～4MPa, add oleic acid in 0.0104～0.0168 ratio by the negative pressure blender loader in order again, highly basic (potassium hydroxide) is in 0.0016～0.0030 ratio, soda ash (yellow soda ash) is in 0.0016～0.0036 ratio, the promoting agent Span-80 is that the sorbitol anhydride olein is in 0.0098～0.0156 ratio, in same temperature, be incubated under the pressure condition, voltage stabilizing reaction 2 hours enters next procedure after process inspection is qualified.Two, with clear water in 0.1504～0.2280 ratio, affinity agent is a carboxy methyl cellulose sodium salt in 0.0032～0.0050 ratio, promoting agent is a polyethenoxy alkylphenols in 0.0041～0.0066 ratio, add B group reaction still by the negative pressure blender loader, agitation cycle 1～3 hour enters next procedure after process inspection is qualified.Three, with reactor A, work in-process in the B group pump into reactor C group respectively, reaction is 2 hours under 65～70 ℃ temperature condition, after process inspection is qualified, add promoting agent in 0.0013～0.0030 ratio, it is aluminum stearate, with adjusting material in 0.056～0.096 ratio, it is crystalline graphite powder, under same temperature condition, stirring reaction 1 hour promptly constitutes qualified product, after tested this product extreme pressure film toughness＞400MPa, drilling fluid overstocks film toughness and has reached 256.8MPa, and the lubricating coefficient of lubricant preventing landslide self reaches 0.068～0.07, joins in the drilling fluid by a certain amount of, can make the lubricating coefficient of drilling fluid reduce to 0.10～0.07.

Effect of the present invention is: 1, this product adopts pitch class raw material; and add some inhibition positively charged ions, promoting agent, affinity agent material; the product that carries out the saponification process reaction and make; thereby avoided containing a large amount of sulfonated bodiess in the sulfonation method product; in drilling process, produce the hydrogen sulfide material; bring the harm of environmental pollution, the distinguishing feature of this product is to have eliminated environmental pollution, helps the effect of environment protection.2, this product contains bituminous matter, multivalence matter cationic salts, to the water sensitivity of mud shale layer collapse, the crumbliness in carbonate rock stratum, coal seam collapses to collapse good embedding sealing and the anti-collapse effect of inhibition all arranged.3, this product contains multiple efficient surfactant, can improve the rock stratum, drilling fluid filter cake and surface of drill stem character, has the effect that reduces filter cake stuck factor, himself lubricating coefficient is 0.068～0.07, after in pressing a certain amount of adding drilling fluid, the lubricating coefficient of drilling fluid becomes 0.10～0.07, has improved the thermostability and the prop-carrying capacity of having improved drilling fluid of drilling fluid; And prevent the defoaming effect of bit balling and certain effect in addition, can make drilling fluid extreme pressure film toughness reach 256.8MPa, have the function of improving the extreme pressure film toughness, mud shale stratum is had inhibition ability and the significant lubricant effect that extremely strong control is collapsed.4, the preventing landslide in two ways effect that has chemistry and physics, the chemical action that is it is to have introduced extremely strong two valency calcium ions and monovalence potassium ion in the product, be characterized in that calcium ion has bigger hydrated radius, can carry out the alkali exchange, the montmorillonite lattice vacancy is disappeared with the sodium ion in the montmorillonite.Thereby reduced hydrated radius; The high price calcium ion can also produce the strong effect that staticizes with surface of clay, disrupted beds is closely linked together, thereby suppressed the expansion of shale; Simultaneously calcium ion also with mud shale in silicon-dioxide and aluminium react, can make clay mineral be converted into calcium, the aluminium of non-expansibility, the effect of silicate.Can be potassium ion, thereby closely connect the illite layer to have the effect of the alkali exchange of any direction of restriction with any disposable cation replacement.If calcium ion and potassium ion are in her simultaneously, deceive people in the layer, also can make expansion difference in the different layers be reduced to the effect of minimum level.Its physical action is that bituminous resins glue is at the shale hole; the embedding of crack aspect and packing action can form protective membrane, have played and have refused the plugging effect of water outside rock; be a kind ofly to prevent that effectively the borehole wall from collapsing, guarantee the lubricant preventing landslide of wellbore stability and well rule.The present invention is especially to orientation well; vertical formula well is in drilling process; to drilling fluid anti-collapse, lubricate, take sand and stable performance has stronger adaptive faculty, to deflecting, hold angle, the deviational survey of high-inclination directional well, get core and running casing well cementing operation and drilling tool, drill bit accident treatment etc. and all played important safeguard protection effect.

Fig. 1 is the process flow diagram of multifunctional lubricant preventing landslide in two ways and production method thereof.

Fig. 2 is an A group reaction process flow sheet among Fig. 1.

Fig. 3 is a B group reaction process flow sheet among Fig. 1.

Fig. 4 is a C group reaction process flow sheet among Fig. 1.

Fig. 5 is the on-the-spot process flow sheet of multifunctional lubricant preventing landslide in two ways and production method thereof.

Embodiments of the invention are: the technical process of 1000kg multifunctional lubricant preventing landslide in two ways is produced in preparation, and formula for raw stock is that the branch three process is finished (Fig. 5), and the qualified back of product metering packing dispatches from the factory.

One, by Fig. 2, A group reaction processing step is:

1, select diesel oil for use 0 to-No. 20, press optimum weight ratio 0.5060, promptly 506k9 adds among the reactor A, heats up with the jacket heater circulation;

2, selecting softening temperature for use is 150～160 ℃ oxidized bitumen, presses optimum weight ratio 0.1893, and promptly 189.3kg adds among the reactor A with the negative pressure blender loader;

3, heat up 65～70 ℃ in reactor, reaction is 2 hours under the condition of pressurization 3.5～4MPa;

4, the sequence number of pressing 3-6 among Fig. 2 adds in reactor A and presses optimum weight ratio 0.0134, i.e. the vegetable oil acid of 13.4kg; Add and press optimum weight ratio 0.0020, i.e. potash (potassium hydroxide) 2kg; Add and press optimum weight ratio 0.0020, i.e. technical pure first grade soda ash (yellow soda ash) 2kg; Add and to press optimum weight ratio 0.0122, i.e. saponification value＜135, the Span-80 of hydroxyl value＜7 (sorbitol anhydride olein) is 12.2kg.

5,65～70 ℃ of insulations, reaction is 2 hours under the condition of voltage stabilizing 3.5～4MPa;

6, process inspection enters next procedure after qualified.

Two, by Fig. 3, B group reaction processing step is:

1, adding by optimum weight ratio 0.1880 in B group reaction still is the clear water of 188kg;

2, selecting carboxy methyl cellulose sodium salt low sticking, purity＞80% for use, is that 4.1Kg passes through the negative pressure blender loader and adds among the reactor B by optimum weight ratio 0.0041, circulates and stirs 3 hours to complete molten state;

3, press optimum weight ratio 0.0051, promptly the polyethenoxy alkylphenols of 5.1Kg adds among the reactor B, and circulation was stirred 1 hour;

4, process inspection is qualified enters next procedure.

Three, by Fig. 4, C group reaction processing step is:

1, the work in-process in reactor A, the B group is pumped into respectively among the reactor C;

2, under 65～70 ℃ condition, reacted 2 hours;

3, process inspection qualified after, it is pure promptly to add industrialization by optimum weight ratio 0.0020, first grade aluminum stearate 2kg; The crystalline graphite powder 75kg that promptly adds carbon containing＞95% by optimum weight ratio 0.0750;

4, under 65～70 ℃ condition, stirring reaction 1 hour is finished product, is the black viscous fluid through checking its technical indicator to reach outward appearance, and density is at 0.98～1.02g/cm ³Between, close flash point is greater than 105 ℃, and pH value is between 7～9, and volatile content is less than 25%, and the molten thing content of benzene is greater than 60%, and landwaste disperses reduced rate greater than 25%, and the filter cake stuck factor reduced rate is greater than 20%.

5, with qualified product (Fig. 5), pump into the homogenizing jar, cool off homogenizing, then the metering packing warehouse-in.

Claims

1, a kind of multifunctional lubricant preventing landslide in two ways, its spy is to comprise:

In the A component by weight:

Diesel oil: oxidized bitumen: oleic acid: potassium hydroxide: yellow soda ash: the sorbitol anhydride olein is 0.4000～0.6120: 0.1480～0.2280: 0.0104～0.0168: 0.0016～0.0030: 0.0016～0.0036: 0.0098～0.0156;

In the B component by weight:

Clear water: carboxy methylcellulose sodium salt: polyethenoxy alkylphenols is 0.1504～0.2280: 0.0032～0.0050: 0.0041～0.0066;

In the C component by weight:

Aluminum stearate: crystalline graphite powder is 0.0013～0.0030: 0.0560～0.0960.

2, preparation method by the described lubricant preventing landslide in two ways product of claim 1, it is characterized in that one, diesel oil is added A group reaction still by weight 0.4000～0.6120, heat up with the jacket heater circulation, add by weight 0.1480～0.2280 oxidized bitumen powder by the negative pressure blender loader then, with jacket heater and jet reactor temperature at 65～70 ℃, 3.5 circulating reaction is 2 hours under the pressure condition of～4MPa, again in order by negative pressure blender loader adding oleic acid 0.0104～0.0168 by weight, potassium hydroxide 0.0016～0.0030, yellow soda ash 0.0016～0.0036, sorbitol anhydride olein 0.0098～0.0156, in same temperature, be incubated voltage stabilizing reaction 2 hours under the pressure condition; Two, clear water 0.1504～0.2280 that will be by weight, carboxy methyl cellulose sodium salt 0.0032～0.0050, polyethenoxy alkylphenols 0.0041～0.0066 adds B group reaction still, agitation cycle 1～3 hour by the negative pressure blender loader; Three, the work in-process in reactor A, the B group are pumped into the C group respectively, after reacting 2 hours under 65～70 ℃ the temperature condition, add 0.0013～0.0030 aluminum stearate by weight, 0.056～0.096 crystalline graphite powder, stirring reaction 1 hour under same temperature condition.