Deformable high-temperature-resistant oil-soluble particle steam profile regulator as well as preparation method and application thereof
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A technology of high temperature resistance and regulator, which is applied in chemical instruments and methods, earthwork drilling, wellbore/well components, etc., can solve the problem of large formation damage, achieve low formation damage, good erosion resistance, and plugging strength high effect
Active Publication Date: 2021-07-30
CNOOC TIANJIN BRANCH +1
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[0007] In order to solve the problem of steam channeling encountered in steam huff and puff in heavy oil reservoirs in my country, and the problem that existing plugging agents cause great damage to formations, the present invention provides a high-temperature steam huff and puff suitable for heavy oil reservoirs. Deformation high temperature resistant oil-soluble particle steam profile regulator for adjusting the steam absorption profile
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Embodiment 1
[0036] A steam profile adjuster for deformation and high temperature resistant oil-soluble particles, the composition of which is as follows by mass fraction: D-5120 petroleum resin 30%, T110 terpene resin 30%, 210# rosin resin 19%, TPV elastomer 16% , Cetyltrimethylammonium Chloride 5%.
[0037] Preparation method, the steps are as follows
[0038] Step 1: D-5120 petroleum resin, T110 terpene resin, 210# rosin resin, TPV elastomer, cetyl or octadecyltrimethylammonium chloride are subjected to air blast drying at a drying temperature of 80°C, and air blast Drying time is 5 hours;
[0039] Step 2: Take by weight the dried D-5120 petroleum resin, T110 terpene resin, 210# rosin resin, TPV elastomer, cetyl or octadecyltrimethylammonium chloride by mass ratio according to the above four formulas, Put it into the mixer, stir and heat at 170-220°C for 15 minutes, mix well and extrude through the screw, cut into sections, cut into sections, cool and granulate, and prepare the steam ...
Embodiment 2
[0041]A steam profile adjuster for deformation and high-temperature resistant oil-soluble particles. The composition is as follows in terms of mass fraction: D-5140 petroleum resin 35%, T120 terpene resin 25%, DMER-145 rosin resin 17%, TPE elastomer 18% %, Octadecyltrimethylammonium Chloride 5%.
[0042] The preparation method is the same as in Example 1.
Embodiment 3
[0044] A steam profile adjuster for deformation and high temperature resistant oil-soluble particles, the composition of which is as follows by mass fraction: D-5130 petroleum resin 30%, T100 terpene resin 30%, 145# rosin resin 15%, TPR elastomer material 21% %, Cetyltrimethylammonium Chloride 4%.
[0045] The preparation method is the same as in Example 1.
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Abstract
The invention relates to a deformable high-temperature-resistant oil-soluble particle steam profile regulator as well as a preparation method and application thereof.The deformable high-temperature-resistant oil-soluble particle steam profile regulatorcomprises the following components by mass: 25-35% of DCPD petroleum resin, 25-35% of terpene resin, 10-20% of rosin resin, 16-24% of an elastomer material, and 4-6% of a surfactant. The softening point of the deformable high-temperature-resistant oil-soluble particle steam profile regulator is greater than 140 DEG C and is far higher than the softening point of a single component. Along with the temperature rise, the regulator is gradually softened or becomes a high-viscosity fluid, and can be firmly adsorbed in a high-steam-absorption profile layer section, so that the regulator has the characteristics of high plugging strength and good scouring resistance. In addition, the petroleum resin DCPD, the terpene resin and the rosin resin can be rapidly dissolved by kerosene, diesel oil or light oil, so that the regulator has the characteristic of rapid plugging removal. The regulator is oil-soluble, the water-phase permeability reducing capability of the regulator is far higher than that of an oil phase, and the regulator has low damage to stratums.
Description
technical field [0001] The invention relates to a deformed high-temperature resistant oil-soluble particle steam profile regulator, a preparation method and an application thereof, which belong to the field of increasing production of oil and gas wells in the petroleum industry. Background technique [0002] Heavy oil thermal recovery technology has made considerable progress since its discovery, and thermal recovery methods represented by steam huff and puff, steam flooding, steam-assisted gravity SAGD, hot water flooding, oil layer combustion, and electromagnetic heating have gradually formed. Among them, heavy oil production methods in my country are mainly steam huff and puff and steam flooding. [0003] Steam huff and puff technology, also known as cyclic gas injection technology, is a kind of operational technology method that injects high-temperature steam into a single well in a cyclic manner to enhance oil recovery. The production stimulation principle of the steam...
Claims
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