CN103146362A - Broad spectrum type high-efficient blocking agent for drilling fluid - Google Patents
Broad spectrum type high-efficient blocking agent for drilling fluid Download PDFInfo
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Abstract
The invention discloses a broad spectrum type high-efficient blocking agent for drilling fluid, which comprises the following components in percentage by weight and granularity: 20-50 percent of polymeric water absorbent swollen resin which is coated by paraffin, wherein the granularity is 270-400 meshes; 10-20 percent of chemical fiber, wherein the granularity is 140-170 meshes; 1-5 percent of velveteen powder, wherein the granularity is 80-120 meshes; 5-15 percent of peanut shell powder, wherein the granularity is 60-100 meshes; 5-15 percent of phoebe zhennan powder, wherein the granularity is 80-120 meshes; 10-20 percent of asphalt powder, wherein the granularity is 60-100 meshes;1-10 percent of walnut shell powder, wherein the granularity is 100-140 meshes; and 1-10 percent of super-fine calcium carbonate, wherein the granularity is 900-1100 meshes; and the polymeric water absorbent swollen resin which is coated by the paraffin is AMPS-AM-AA terpolymer polymeric water absorbent swollen resin. The broad spectrum type high-efficient blocking agent for the drilling fluid has the effect of broad spectrum blocking, has the good blocking effect on cracks with the size from millimeter dimension to micron dimension, dose not damage an oil and gas reservoir, can protect a hydrocarbon reservoir, does not have the bad influence on property of the drilling fluid, and is an excellent plugging agent while drilling.
Description
Technical field
The present invention relates to a kind of assistant for drilling petroleum well, specifically a kind of drilling fluid is with the efficient plugging agent of broad spectrum type.
Background technology
At present, in petroleum drilling operation, in order to prevent that water in drilling fluid from entering the stratum and causing drilling failure, construction party adds plugging agent usually, to address the above problem.At present, using maximum plugging agents is the agent of individual event pressure seal and bridging plug plugging agent, but these two kinds of plugging agents do not have the effect of wide spectrum leak stopping; can only be for the fracture plugging of certain width; and to the protection poor effect of hydrocarbon zone, larger to the performance impact of drilling fluid, affect drilling speed.CN102127400A discloses a kind of drilling fluid with protecting the low permeability reservoir plugging agent; comprise following component: 10～40 parts of molten fibers of theobromine, but 5～10 parts of oil-soluble resins, 30～60 parts of molten particle and distortion particle of theobromine; 5～10 parts of natural small molecule materials of high temperature resistance, 10～15 parts of calcium carbonate.CN102391845A discloses a kind of composite chemical blocking agent.This chemical plugging agent by structure-forming agent, solidification intensifier, fiber plasticity toughener, suspension stabilizer, and water conservation adjustable solidification agent etc. form.CN101693827A discloses a kind of coagulation composite sealing agent, and its component is water glass, potassium silicate, magnesium oxide, calcium carbonate, oyster shell whiting, calcium oxide.CN1360004A discloses a kind of fast plugging agent for drilling fluid, and the component that it contains and weight proportion are 60～90 parts of expanded rice husks, 5～20 parts of polymer modified celluloses, 2～12 parts of amphoteric celluloses, 4～20 parts of Calcium hydrogen carbonates.CN1045118A discloses a kind of method of drilling fluid oil soluble plugging agent.Its reaction mechanism is to use sulfuric acid as oxygenant, makes asphaltene colloid and the oily oxidation of part in acid sludge generate pitch; Sulfuric acid makes acid sludge generating portion sulfonic acid again as sulphonating agent.Water is removed wherein water-soluble sulfonic acid, then with in lime or sodium hydroxide and generate calcium sulphonate or sodium sulfonate oil soluble plugging agent.Above these technology for how to make drilling fluid with plugging agent have the wide spectrum shutoff effect, grade all had good plugging effect to micron-sized crack do not provide concrete guidance program.
Summary of the invention
Technical problem to be solved by this invention is; provide a kind of drilling fluid with the efficient plugging agent of broad spectrum type; it has the effect of wide spectrum shutoff; grade all had good plugging effect to micron-sized crack; this product to oil and gas reservoir without injury; can protect hydrocarbon zone, and property of drilling fluid is had no adverse effects, thereby become a kind of good drill-feeding plugging agent.
For solving the problems of the technologies described above, the technical solution used in the present invention is as follows:
A kind of drilling fluid is with the efficient plugging agent of broad spectrum type (assistant for drilling petroleum well), its technical scheme is that it is take the polymer water uptake expansion resin that coated by paraffin as main shutoff composition, be aided with micro-elasticity plugging material chemical fibre powder, velveteen powder, peanut hull meal, nanmu powder, asphalt powder and bridge formation plugging material walnut shell flour, rigidity plugging material calcium carbonate superfine powder, through mixing, wherein the scope of the scope of the weight percent of each component and granularity (sieve size) is: by the polymer water uptake expansion resin 20% ~ 50% that paraffin coats, granularity is 270 ~ 400 orders; Chemical fibre powder 10% ~ 20%, granularity are 140 ~ 170 orders; Velveteen powder 1% ~ 5%, granularity are 80 ~ 120 orders; Peanut hull meal 5% ~ 15%, granularity are 60 ~ 100 orders; Nanmu powder 5% ~ 15%, granularity are 80 ~ 120 orders; Asphalt powder 10% ~ 20%, granularity are 60 ~ 100 orders; Walnut shell flour 1% ~ 10%, granularity are 100 ~ 140 orders; Calcium carbonate superfine powder 1% ~ 10%, granularity are 900 ~ 1100 orders;
The AMPS-AM-AA terpolymer polymer water uptake expansion resin (be polymer water uptake expansion resin be AMPS-AM-AA terpolymer polymer water uptake expansion resin) of the above-mentioned polymer water uptake expansion resin that is coated by paraffin (highly elastic material that is coated by paraffin in other words conj.or perhaps) for being coated by paraffin.
Drilling fluid of the present invention with the efficient plugging agent of broad spectrum type, the scope of its each weight percentages of components and preferred granularity is:
By the polymer water uptake expansion resin 20% ~ 50% that paraffin coats, granularity is 300 orders; Chemical fibre powder 10% ~ 20%, granularity are 150 orders; Velveteen powder 1% ~ 5%, granularity are 100 orders; Peanut hull meal 5% ~ 15%, granularity are 80 orders; Nanmu powder 5% ~ 15%, granularity are 100 orders; Asphalt powder 10% ~ 20%, granularity are 80 orders; Walnut shell flour 1% ~ 10%, granularity are 120 orders; Calcium carbonate superfine powder 1% ~ 10%, granularity are 1000 orders.
Drilling fluid of the present invention with the efficient plugging agent of broad spectrum type, scope and the granularity of the preferred weight percent of its each component is:
By the polymer water uptake expansion resin 30% ~ 50% that paraffin coats, granularity is 300 orders; Chemical fibre powder 15% ~ 20%, granularity are 150 orders; Velveteen powder 1% ~ 4%, granularity are 100 orders; Peanut hull meal 7% ~ 13%, granularity are 80 orders; Nanmu powder 10% ~ 15%, granularity are 100 orders; Asphalt powder 10% ~ 15%, granularity are 80 orders; Walnut shell flour 1% ~ 7%, granularity are 120 orders; Calcium carbonate superfine powder 3% ~ 8%, granularity are 1000 orders.
Preparation method of the present invention be by the weight percent of above-mentioned each component when granularity get polymer water uptake expansion resin, chemical fibre powder, velveteen powder, peanut hull meal, nanmu powder, asphalt powder, walnut shell flour, the calcium carbonate superfine powder that is coated by paraffin, put into respectively mixing machine, mix and namely get product.Plugging agent of the present invention can be sneaked into wherein by the amount (weight) of 1%-4% in drilling fluid and be used.
The present invention is take the polymer water uptake expansion resin that coated by paraffin as main shutoff composition, be aided with micro-elasticity plugging material chemical fibre powder, velveteen powder, peanut hull meal, nanmu powder, asphalt powder and bridge formation plugging material walnut shell flour, rigidity plugging material calcium carbonate superfine powder, eight kinds of components are through mixing, wherein polymer water uptake expansion resin has good water swellability, expansion multiple can reach 10 ~ 150 times, the expansion time of the polymer water uptake expansion resin that is coated by paraffin can delay 1 ~ 3 hour, and it is main leak stopping composition; Chemical fibre powder, velveteen powder, peanut hull meal, nanmu powder, asphalt powder have the function of the leak stopping of micro-elasticity; Walnut shell flour can play the effect of bridge formation.Through test; plugging agent of the present invention has the effect of wide spectrum shutoff, and grade is all had good plugging effect to micron-sized crack, is a kind of to the plugging agent of oil and gas reservoir without injury, protection hydrocarbon zone; this product has no adverse effects to property of drilling fluid, is a kind of good drill-feeding plugging agent.
Following subordinate list 1 further illustrates distinguishing feature of the present invention.
Subordinate list 1
In sum; the present invention has the effect of wide spectrum shutoff; grade all had good plugging effect (wide spectrum refers to that multiple crack is had good plugging effect) to micron-sized crack; this product to oil and gas reservoir without injury; can protect hydrocarbon zone; and property of drilling fluid is had no adverse effects, thereby become a kind of good drill-feeding plugging agent.Plugging effect of the present invention is good, and use range is wide, and preparation method and raw material process are simple, less investment, and cost is low, non-environmental-pollution.
Embodiment
The present invention is further described below in conjunction with embodiment:
Embodiment 1: drilling fluid is take the polymer water uptake expansion resin (its surface coats paraffin) that coated by paraffin as main shutoff composition with the efficient plugging agent of broad spectrum type, be aided with micro-elasticity plugging material chemical fibre powder, velveteen powder, peanut hull meal, nanmu powder, asphalt powder and bridge formation plugging material walnut shell flour, rigidity plugging material calcium carbonate superfine powder, through mixing, wherein the weight percent of each component when granularity be: by the polymer water uptake expansion resin 40% that paraffin coats, granularity is 300 orders; Chemical fibre powder 15%, granularity are 150 orders; Velveteen powder 4%, granularity are 100 orders; Peanut hull meal 10%, granularity are 80 orders; Nanmu powder 10%, granularity are 100 orders; Asphalt powder 10%, granularity are 80 orders; Walnut shell flour 6%, granularity are 120 orders; Calcium carbonate superfine powder 5%, granularity are 1000 orders.The above-mentioned polymer water uptake expansion resin that is coated by paraffin is (paraffin coats) AMPS-AM-AA terpolymer polymer water uptake expansion resin.
Concrete preparation method of the present invention gets 6 kilograms of 10 kilograms of 10 kilograms, 10 kilograms of 4 kilograms, 15 kilograms, 40 kilograms of polymer water uptake expansion resins, chemical fibre powder, velveteen powder, peanut hull meals, nanmu powder, asphalt powders, walnut shell flours, 5 kilograms of the calcium carbonate superfine powders by the paraffin coating of corresponding order number, put into respectively (conventional) mixing machine, mix and namely get product.Plugging agent of the present invention can be sneaked into by 1% ~ 4% amount in drilling fluid and wherein be used (such as adding plugging agent by 3% of drilling fluid weight, it is sneaked in drilling fluid use).
Embodiment 2: drilling fluid is take the polymer water uptake expansion resin that coated by paraffin as main shutoff composition with the efficient plugging agent of broad spectrum type, be aided with micro-elasticity plugging material chemical fibre powder, velveteen powder, peanut hull meal, nanmu powder, asphalt powder and bridge formation plugging material walnut shell flour, rigidity plugging material calcium carbonate superfine powder, through mixing.The above-mentioned polymer water uptake expansion resin that is coated by paraffin is AMPS-AM-AA terpolymer polymer water uptake expansion resin.
Wherein the weight percent of each component when granularity be: by the polymer water uptake expansion resin 30% that paraffin coats, granularity is 300 orders; Chemical fibre powder 20%, granularity are 150 orders; Velveteen powder 3%, granularity are 100 orders; Peanut hull meal 10%, granularity are 80 orders; Nanmu powder 10%, granularity are 100 orders; Asphalt powder 15%, granularity are 80 orders; Walnut shell flour 7%, granularity are 120 orders; Calcium carbonate superfine powder 5%, granularity are 1000 orders.
Wherein the weight percent of each component when granularity can for: by the polymer water uptake expansion resin 50% that paraffin coats, granularity is 300 orders; Chemical fibre powder 15%, granularity are 150 orders; Velveteen powder 2%, granularity are 100 orders; Peanut hull meal 8%, granularity are 80 orders; Nanmu powder 10%, granularity are 100 orders; Asphalt powder 10%, granularity are 80 orders; Walnut shell flour 2%, granularity are 120 orders; Calcium carbonate superfine powder 3%, granularity are 1000 orders.
Wherein the weight percent of each component when granularity can for: by the polymer water uptake expansion resin 45% that paraffin coats, granularity is 300 orders; Chemical fibre powder 15%, granularity are 150 orders; Velveteen powder 2%, granularity are 100 orders; Peanut hull meal 8%, granularity are 80 orders; Nanmu powder 10%, granularity are 100 orders; Asphalt powder 10%, granularity are 80 orders; Walnut shell flour 4%, granularity are 120 orders; Calcium carbonate superfine powder 6%, granularity are 1000 orders.
Wherein the weight percent of each component when granularity can for: by the polymer water uptake expansion resin 25% that paraffin coats, granularity is 300 orders; Chemical fibre powder 10%, granularity are 150 orders; Velveteen powder 5%, granularity are 100 orders; Peanut hull meal 15%, granularity are 80 orders; Nanmu powder 5%, granularity are 100 orders; Asphalt powder 20%, granularity are 80 orders; Walnut shell flour 10%, granularity are 120 orders; Calcium carbonate superfine powder 10%, granularity are 1000 orders.
Wherein the weight percent of each component when granularity can for: by the polymer water uptake expansion resin 35% that paraffin coats, granularity is 300 orders; Chemical fibre powder 15%, granularity are 150 orders; Velveteen powder 4%, granularity are 100 orders; Peanut hull meal 7%, granularity are 80 orders; Nanmu powder 15%, granularity are 100 orders; Asphalt powder 15%, granularity are 80 orders; Walnut shell flour 5%, granularity are 120 orders; Calcium carbonate superfine powder 4%, granularity are 1000 orders.
Concrete preparation method of the present invention gets polymer water uptake expansion resin, chemical fibre powder, velveteen powder, peanut hull meal, nanmu powder, asphalt powder, walnut shell flour, the calcium carbonate superfine powder by the paraffin coating of corresponding order number by the weight percent of above-mentioned each component, put into respectively (conventional) mixing machine, mix and namely get product.Plugging agent of the present invention can be sneaked into by 1% ~ 4% amount in drilling fluid and wherein be used (such as adding plugging agent by 1% or 4% of drilling fluid weight, it is sneaked in drilling fluid use).
Embodiment 3: drilling fluid is take the polymer water uptake expansion resin that coated by paraffin as main shutoff composition with the efficient plugging agent of broad spectrum type, be aided with micro-elasticity plugging material chemical fibre powder, velveteen powder, peanut hull meal, nanmu powder, asphalt powder and bridge formation plugging material walnut shell flour, rigidity plugging material calcium carbonate superfine powder, through mixing.The above-mentioned polymer water uptake expansion resin that is coated by paraffin is AMPS-AM-AA terpolymer polymer water uptake expansion resin.
Wherein the weight percent of each component when granularity be: by the polymer water uptake expansion resin 30% that paraffin coats, granularity is 270 orders; Chemical fibre powder 20%, granularity are 150 orders; Velveteen powder 3%, granularity are 80 orders; Peanut hull meal 10%, granularity are 80 orders; Nanmu powder 10%, granularity are 80 orders; Asphalt powder 15%, granularity are 80 orders; Walnut shell flour 7%, granularity are 140 orders; Calcium carbonate superfine powder 5%, granularity are 1000 orders.
Wherein the weight percent of each component when granularity can for: by the polymer water uptake expansion resin 50% that paraffin coats, granularity is 400 orders; Chemical fibre powder 15%, granularity are 140 orders; Velveteen powder 2%, granularity are 120 orders; Peanut hull meal 8%, granularity are 60 orders; Nanmu powder 10%, granularity are 100 orders; Asphalt powder 10%, granularity are 80 orders; Walnut shell flour 2%, granularity are 120 orders; Calcium carbonate superfine powder 3%, granularity are 1000 orders.
Wherein the weight percent of each component when granularity can for: by the polymer water uptake expansion resin 45% that paraffin coats, granularity is 300 orders; Chemical fibre powder 15%, granularity are 170 orders; Velveteen powder 2%, granularity are 100 orders; Peanut hull meal 8%, granularity are 100 orders; Nanmu powder 10%, granularity are 120 orders; Asphalt powder 10%, granularity are 60 orders; Walnut shell flour 4%, granularity are 120 orders; Calcium carbonate superfine powder 6%, granularity are 1000 orders.
Wherein the weight percent of each component when granularity can for: by the polymer water uptake expansion resin 25% that paraffin coats, granularity is 270 orders; Chemical fibre powder 10%, granularity are 150 orders; Velveteen powder 5%, granularity are 100 orders; Peanut hull meal 15%, granularity are 80 orders; Nanmu powder 5%, granularity are 100 orders; Asphalt powder 20%, granularity are 100 orders; Walnut shell flour 10%, granularity are 100 orders; Calcium carbonate superfine powder 10%, granularity are 900 orders.
Wherein the weight percent of each component when granularity can for: by the polymer water uptake expansion resin 35% that paraffin coats, granularity is 300 orders; Chemical fibre powder 15%, granularity are 170 orders; Velveteen powder 4%, granularity are 100 orders; Peanut hull meal 7%, granularity are 80 orders; Nanmu powder 15%, granularity are 120 orders; Asphalt powder 15%, granularity are 80 orders; Walnut shell flour 5%, granularity are 140 orders; Calcium carbonate superfine powder 4%, granularity are 1100 orders.
Concrete preparation method of the present invention gets polymer water uptake expansion resin, chemical fibre powder, velveteen powder, peanut hull meal, nanmu powder, asphalt powder, walnut shell flour, the calcium carbonate superfine powder by the paraffin coating of corresponding order number by the weight percent of above-mentioned each component, put into respectively (conventional) mixing machine, mix and namely get product.Plugging agent of the present invention can be sneaked into wherein by 1% ~ 4% amount in drilling fluid and be used.
The commodity of the present invention's polymer water uptake expansion resin that is coated by paraffin used (highly elastic material-through AMPS-AM-AA terpolymer polymer water uptake expansion resin that paraffin coats) for selling on market are such as the commodity that can select national fishing shelf, Dezhou petroleum engineering technology company limited to produce (address: Dezhou City Shandong Province economic and technological development zone).The polymer water uptake expansion resin that is coated by paraffin used is the good plugging agent of a kind of controllable expansion time and expansion multiple, it is by AMPS(2-acrylamido-methyl propane sulfonic acid), the AM(acrylamide), AA(vinylformic acid) be polymerized, product after polymerization is coated by paraffin and forms, its production method can be with reference to " AMPS/AM/AA Synthesis of copolymer and performance study ", see " oil-gas field surface engineering ", 06 phase in 2009, author: Zhao Tianhong, Dong Li, Li Chenyan.Also can join by " technical study of controllable expanded plugging agent cladding process ", see " Drilling and completion fluids ", 05 phase in 2008, author: Xue Yuzhi, the Tang Dynasty thread etc.The chemical fibre powder can adopt the commodity sold on market (can choose the chemical fibre powder that Shijiazhuang City happy Fibre Materials Inc produces, the address: the wall development area falls in the south of a town, the Si Jia village, Luquan City, Hebei province).The chemical fibre powder can also be made with discarded synthon, such as adopting a kind of or wherein several in terylene, polyamide fibre, acrylic fibers to make the chemical fibre powder by pulverizer (pulverizing).The velveteen powder can adopt the commodity of selling on market, such as the commodity (address: Liaocheng of Shandong Province) that can select the new cotton pulp of Liaocheng grace factory to produce.The velveteen powder adopts disintegrating apparatus to make (namely pulverized by pulverizer and form) by short velveteen (cotton linter), is routine techniques.Peanut hull meal, nanmu powder, asphalt powder, walnut shell flour, calcium carbonate superfine powder can adopt the commodity of selling on market.
Above each embodiment can satisfy the performance data of subordinate list 1.Above each embodiment all has the effect of wide spectrum shutoff; grade all had good plugging effect (wide spectrum refers to that multiple crack is had good plugging effect) to micron-sized crack; this product to oil and gas reservoir without injury; can protect hydrocarbon zone; and property of drilling fluid is had no adverse effects, thereby become a kind of good drill-feeding plugging agent.Plugging effect of the present invention is good, and use range is wide, and preparation method and raw material process are simple, less investment, and cost is low, non-environmental-pollution.
Claims (3)
1. drilling fluid broad spectrum type plugging agent, it is characterized in that it is take the polymer water uptake expansion resin that coated by paraffin as main shutoff composition, be aided with micro-elasticity plugging material chemical fibre powder, velveteen powder, peanut hull meal, nanmu powder, asphalt powder and bridge formation plugging material walnut shell flour, rigidity plugging material calcium carbonate superfine powder, through mixing, wherein the scope of the scope of the weight percent of each component and granularity is:
By the polymer water uptake expansion resin 20% ~ 50% that paraffin coats, granularity is 270 ~ 400 orders; Chemical fibre powder 10% ~ 20%, granularity are 140 ~ 170 orders; Velveteen powder 1% ~ 5%, granularity are 80 ~ 120 orders; Peanut hull meal 5% ~ 15%, granularity are 60 ~ 100 orders; Nanmu powder 5% ~ 15%, granularity are 80 ~ 120 orders; Asphalt powder 10% ~ 20%, granularity are 60 ~ 100 orders; Walnut shell flour 1% ~ 10%, granularity are 100 ~ 140 orders;
Calcium carbonate superfine powder 1% ~ 10%, granularity are 900 ~ 1100 orders;
The above-mentioned polymer water uptake expansion resin that is coated by paraffin is AMPS-AM-AA terpolymer polymer water uptake expansion resin.
2. drilling fluid according to claim 1 broad spectrum type plugging agent is characterized in that scope and the granularity of the weight percent of above-mentioned each component is:
By the polymer water uptake expansion resin 20% ~ 50% that paraffin coats, granularity is 300 orders; Chemical fibre powder 10% ~ 20%, granularity are 150 orders; Velveteen powder 1% ~ 5%, granularity are 100 orders; Peanut hull meal 5% ~ 15%, granularity are 80 orders; Nanmu powder 5% ~ 15%, granularity are 100 orders; Asphalt powder 10% ~ 20%, granularity are 80 orders; Walnut shell flour 1% ~ 10%, granularity are 120 orders; Calcium carbonate superfine powder 1% ~ 10%, granularity are 1000 orders.
3. drilling fluid according to claim 1 broad spectrum type plugging agent is characterized in that scope and the granularity of the weight percent of above-mentioned each component is:
By the polymer water uptake expansion resin 30% ~ 50% that paraffin coats, granularity is 300 orders; Chemical fibre powder 15% ~ 20%, granularity are 150 orders; Velveteen powder 1% ~ 4%, granularity are 100 orders; Peanut hull meal 7% ~ 13%, granularity are 80 orders; Nanmu powder 10% ~ 15%, granularity are 100 orders; Asphalt powder 10% ~ 15%, granularity are 80 orders; Walnut shell flour 1% ~ 7%, granularity are 120 orders; Calcium carbonate superfine powder 3% ~ 8%, granularity are 1000 orders.
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