CN102533240A - High-temperature oil reservoir composite modifying and flooding agent and preparing method and application thereof - Google Patents
High-temperature oil reservoir composite modifying and flooding agent and preparing method and application thereof Download PDFInfo
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- CN102533240A CN102533240A CN2011103368469A CN201110336846A CN102533240A CN 102533240 A CN102533240 A CN 102533240A CN 2011103368469 A CN2011103368469 A CN 2011103368469A CN 201110336846 A CN201110336846 A CN 201110336846A CN 102533240 A CN102533240 A CN 102533240A
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Abstract
The invention discloses a high-temperature oil reservoir composite modifying and flooding agent, which contains polymer polyacrylamide and cross-linking agents with proportion of weight parts as (1-6):1. The high-temperature oil reservoir composite modifying and flooding agent is developed mainly aiming at high-temperature oil reservoirs (70-125 DEG C) and is mainly used for the deep portion profile control and fluid deep portion steering technology. Under high-temperature conditions, the high-temperature oil reservoir composite modifying and flooding agent is high in reaction activity, low in use concentration, non-toxic and odorless and easy to operate, and has no harm on the environment and the staff. The high-temperature oil reservoir composite modifying and flooding agent is used in deep portion profile control and profile flooding construction and widely applied in Tuba oil fields and Jilin oil fields, and input-output ratio reaches 1:3.6. Through continuous research on deepening oil reservoir understanding, optimizing construction processes and pump injection procedures and controlling injection radiuses, the high-temperature oil reservoir composite modifying and flooding agent can be widely applied to the high-temperature oil reservoir aspect.
Description
Technical field
The present invention relates to a kind of oilfield chemistry agent, particularly a kind of high temperature modification linking agent and its production and application, the oilfield exploitation field belonged to.
Background technology
In recent years, the deep transfer drive technical development that is applied to middle low-temperature reservoir (below 70 ℃) gets very fast, and has obtained widespread use in the oil field.But the dark conditioning technology development that is applied to high-temperature oil reservoir (more than 70 ℃) is relatively slow, and this mainly is because high temperature polymer and high-temperature cross-linking agent production development are slower, has therefore restricted the development of the deep transfer drive technology of high-temperature oil reservoir (more than 70 ℃).At present, the bigger phenolic crosslinkers and the lower surrogate of some toxicity of the toxicity fifties still used in many oil fields.Although phenolic system can be used for the high-temperature oil reservoir environment,, environment and operator are all had a strong impact on because the chemical agent volatility is serious; And response capacity is low, and using dosage is big; National environmental protection department clearly forbids injecting water use phenolic aldehyde material; Therefore, need a kind of substitute products of non-toxic inexpensive, can form good thermal stability with multipolymer, visco-elasticity meets the requirement that necessarily required gelinite satisfies high-temperature oil reservoir profile control transfer drive.
China's most of Oilfield using waterflooding pattern, along with the oil-field development exploitation get in high water-cut stage, improve injectability, improve development effectiveness and be one of urgent task that these oil fields face.Because chemical profile control transfer drive technological adaptability is wide, flexible operation is with low cost, is the prefered method that present oilfield stimulation is taped the latent power.Oil reservoir deep profile controlling transfer drive technology is effective one of the water driving technology that improves that on conventional profile control and extensive polymer flooding basis, grows up; It can effectively adjust oil reservoir intake profile and plane wave and efficient; Success ratio is high, is the developing direction of improving water driving technology in recent years.Oil deposit deep part transfer drive technology is different from polymer flooding and profile control technique to the requirement of chemical agent, and the cross-linking system that requires to use should have certain gel-formation power, also certain flow capacity will be arranged, and under differing temps and salinity condition, flexibility preferably arranged.Be in 70-90 ℃ temperature regime to telling the most of reservoir temperature in oil field, Kazakhstan, must have the gelinite that adapts to this oil reservoir system to reach the linking agent of dark accent, raising the output purpose.
Summary of the invention
The objective of the invention is problem to above prior art existence; Compound adjusting driving agnet its preparation method in a kind of high-temperature oil reservoir deep and application thereof are provided; Adjusting driving agnet viscosity of the present invention is high, and gelation time is long and adjustable, suits in high-temperature oil reservoir, to carry out chemical transfer drive, profile control; And oil displacement efficiency is good, and oil displacement efficiency is high.
For realizing the object of the invention, one aspect of the present invention provides a kind of high-temperature oil reservoir deep compound adjusting driving agnet, comprises polymer poly acrylic amide and linking agent, and wherein the weight part proportioning of SEPIGEL 305 and linking agent is 1-6: 1.
Wherein, the weight part proportioning of said SEPIGEL 305 and linking agent is 1-4: 1, be preferably 2-4: and 1, further be preferably 2: 1.
Particularly, said linking agent according to as follows in sequence step be prepared from:
1) prepares raw material according to following weight part proportioning
Phenol 2-4, vulkacit H 1-3, formaldehyde 1-3, solidifying agent 1-3, catalyzer 0.5-1.5
2) said raw material is added reaction kettle, after mixing, heating is to carry out polyreaction under 60-100 ℃ keeping temperature, promptly gets.
Wherein, The weight part proportioning of raw material described in the step 1) is: phenol 2.5-3.5, vulkacit H 1.5-2.5, formaldehyde 1.5-2.5, solidifying agent 1.5-2.5, catalyzer 0.75-1.25 are preferably phenol 3, vulkacit H 2, formaldehyde 2, solidifying agent 2, catalyzer 1.
Particularly, said solidifying agent is one or more in diethylenetriamine, triethylene tetramine, vinyl triamine or the ammonium chloride, is preferably ammonium chloride; Described catalyzer is sodium hydroxide or Pottasium Hydroxide, is preferably sodium hydroxide.
Particularly, said formaldehyde is that mass percent concentration is 37% industrial formol solution.
Wherein, temperature of reaction step 2) is preferably 80-90 ℃; The reaction times of said polyreaction is 2-3h, is preferably 2.5h.
The present invention provides the preparation method of the compound adjusting driving agnet in a kind of high-temperature oil reservoir deep on the other hand, it is characterized in that comprising as follows step in sequence:
1) SEPIGEL 305 is water-soluble, be mixed with the polyacrylamide solution that concentration is 400-1500mg/L;
2) linking agent is mixed with water, be mixed with the cross-linking agent solution that concentration is 200-1000mg/L;
3) in polypropylene amine solution, add cross-linking agent solution, stir, promptly get.
Wherein, the molecular weight of SEPIGEL 305 described in the step 1) >=1,200 ten thousand are preferably 1200-1700 ten thousand, further are preferably 1,200 ten thousand; The concentration of said polyacrylamide solution is 800-1200mg/L, is preferably 1000mg/L.
Particularly, the concentration of said polyacrylamide solution is 400-1500mg/L, is that the weight of the SEPIGEL 305 that adds in every 1L water is 400-1500mg, and the weight that contains SEPIGEL 305 in promptly every 1L water is 400-1500mg.
Wherein, linking agent step 2) according to as follows in sequence step be prepared from:
2-1) prepare raw material according to following weight part proportioning
Phenol 2-4, vulkacit H 1-3, formaldehyde 1-3, solidifying agent 1-3, catalyzer 0.5-1.5
2-2) said raw material is added reaction kettle, after mixing, heating is to carry out polyreaction under 60-100 ℃ keeping temperature, promptly gets.
Particularly; Step 2-1) the weight part proportioning of said raw material is: phenol 2.5-3.5, vulkacit H 1.5-2.5, formaldehyde 1.5-2.5, solidifying agent 1.5-2.5, catalyzer 0.75-1.25 are preferably phenol 3, vulkacit H 2, formaldehyde 2, solidifying agent 2, catalyzer 1.
Especially, said solidifying agent is one or more in diethylenetriamine, triethylene tetramine, vinyl triamine or the ammonium chloride, is preferably ammonium chloride; Described catalyzer is sodium hydroxide or Pottasium Hydroxide, is preferably sodium hydroxide.
Particularly, temperature of reaction is preferably 80-90 ℃ step 2-2); The reaction times of said polyreaction is 2-3h, is preferably 2.5h.
Wherein, step 2) concentration of cross-linking agent solution is 200-1000mg/L described in, is that the weight of the linking agent that adds in every 1L water is 200-1000mg, and the weight that contains linking agent in promptly every 1L water is 200-1000mg.
Wherein, step 2) concentration of cross-linking agent solution is 500-700mg/L described in, is preferably 600mg/L; Described in the step 3) in the polyacrylamide solution weight part proportioning of the linking agent in SEPIGEL 305 and the cross-linking agent solution be 1-6: 1, be preferably 1-4: 1, further be preferably 24: 1, further be preferably 2: 1.
Another aspect of the present invention provides the application of the compound adjusting driving agnet in a kind of above-mentioned high-temperature oil reservoir deep in high-temperature oil reservoir chemical displacement of reservoir oil exploitation.
The compound adjusting driving agnet in high-temperature oil reservoir of the present invention deep has following advantage:
1, the compound adjusting driving agnet in high-temperature oil reservoir deep of the present invention can be applicable to deep chemistry transfer drive, the profile control processing of high-temperature oil reservoir, and compound adjusting driving agnet is under hot conditions, and gel-forming property is good, stablizes, and is applicable to that temperature is the high-temperature oil reservoir more than 70 ℃.
2, the compound adjusting driving agnet in high-temperature oil reservoir deep of the present invention is a kind of movable gel (being colloidal dispersed gel); Gelation time is adjustable; Can realize dynamic plugging,, play the purpose that steady oil is controlled water becoming glue can be used for the high seepage channel on shutoff water filling stratum after 2-5 days to down-hole most permeable zone section; Viscosity increases gradually after becoming glue, and gelation time is long, prevents compound adjusting driving agnet block pumps and pipeline, the validity period that has prolonged compound adjusting driving agnet simultaneously.
3, the compound adjusting driving agnet oil displacement efficiency in high-temperature oil reservoir deep of the present invention is remarkable, and effect of field application is relatively good, and the displacement oil recovery factor is high, has improved the RF in oil field, has changed the short defective of conventional adjusting driving agnet validity period.
4, the preparation technology of the compound adjusting driving agnet in high-temperature oil reservoir deep of the present invention is simple, easy to operate, sufficient raw; Cheap; And the proportioning of linking agent and SEPIGEL 305 is low, and promptly polymkeric substance is low with the ratio of linking agent solid content, can significantly reduce the use of chemical reagent; Production cost is low, is suitable for applying.
5, the compound adjusting driving agnet in high-temperature oil reservoir deep of the present invention has no irritating odor, toxicity significantly reduces, and oilfield construction is safe in utilization.
6, the compound adjusting driving agnet in high-temperature oil reservoir deep of the present invention is in oilfield chemistry transfer drive, profile control site operation process, and convenient in application is constructed simply.
Description of drawings
Fig. 1 is the chemical structural formula of staple in the compound adjusting driving agnet in high-temperature oil reservoir of the present invention deep.
Embodiment
The present invention is a raw material with phenol, vulkacit H, formaldehyde, catalyzer, solidifying agent; In reaction kettle, be heated to certain temperature; Under the effect of catalyzer, carry out polyreaction; Generation contains the high temperature performed polymer mixture (as containing monohydroxy phenol, dihydric phenol performed polymer) of hydroxyl phenol, and promptly high temperature performed polymer organic crosslinking agent mixture that is to say to obtain high temperature performed polymer linking agent.
The high temperature performed polymer linking agent and the SEPIGEL 305 effect of the present invention's preparation; At a certain temperature; Forming SEPIGEL 305-resol is the plural gel body (like Fig. 1) of staple; Produce resol, the methylene base Vestolen PP 7052 phthalein amine gel of part simultaneously, obtain the compound adjusting driving agnet of polyhydroxy phenol high temperature, i.e. the compound adjusting driving agnet in high-temperature oil reservoir deep.
Embodiment 1
One, preparation linking agent
1, according to following weight proportion prepare raw material (* 10kg)
Phenol 3, vulkacit H 2, formaldehyde 2, solidifying agent 2, catalyzer 1
Wherein, formaldehyde is that mass percent concentration is 37% formaldehyde solution; Solidifying agent is an ammonium chloride; Catalyzer is a sodium hydroxide.
Raw material formaldehyde in the embodiment of the invention is that mass percent concentration is 37% industrial formol solution; Solidifying agent adopts ammonium chloride, and other also are applicable to the present invention like diethylenetriamine, triethylene tetramine, vinyl triamine; Catalyzer adopts sodium hydroxide, and other also are applicable to the present invention like Pottasium Hydroxide.
2, above-mentioned raw materials is joined in the reaction kettle together, mix, heat and make temperature remain 85 ± 5 ℃, under this temperature, carry out polyreaction.
3, behind the reaction 2.5h, reaction mixture is cooled to normal temperature (25 ℃), promptly get performed polymer linking agent (being that high-temperature oil reservoir deep transfer drive is with poly-hydroxy phenols linking agent).
Two, preparation adjusting driving agnet
1, clear water and SEPIGEL 305 are mixed; Be mixed with the polyacrylamide solution that concentration is 1000mg/L; Be the SEPIGEL 305 that adds 1000mg in every 1L clear water, that is to say that the weight that contains SEPIGEL 305 in every 1L clear water is 1000mg; Wherein, the molecular weight of SEPIGEL 305 is 1,200 ten thousand;
2, add clear water to high-temperature oil reservoir deep transfer drive in poly-hydroxy phenols linking agent; Mix; Be mixed with the cross-linking agent solution that concentration is 600mg/L; Be to add the performed polymer linking agent that the step () of 600mg prepares in every 1L clear water, the weight that is to say performed polymer linking agent in every 1L clear water is 600mg;
3, polyacrylamide solution and cross-linking agent solution are mixed promptly get, wherein, the weight proportion of linking agent is 2: 1 in SEPIGEL 305 in the control polyacrylamide solution and the cross-linking agent solution.
Embodiment 2
One, synthetic cross-linking agent
1, according to following weight proportion prepare raw material (* 10kg)
Phenol 2.5, vulkacit H 2.5, formaldehyde 1.5, solidifying agent 1.5, catalyzer 0.75
2, above-mentioned raw materials is joined in the reaction kettle together, mix, heat and make temperature remain 95 ± 5 ℃, under this temperature, carry out polyreaction.
3, behind the reaction 2h, reaction mixture is cooled to normal temperature (25 ℃), promptly get.
Two, preparation adjusting driving agnet
1, clear water and SEPIGEL 305 are mixed; Be mixed with the polyacrylamide solution that concentration is 800mg/L; Be the SEPIGEL 305 that adds 800mg in every 1L clear water, that is to say that the weight that contains SEPIGEL 305 in every 1L clear water is 800mg; Wherein, the molecular weight of SEPIGEL 305 is 1,200 ten thousand;
2, add clear water to high-temperature oil reservoir deep transfer drive in poly-hydroxy phenols linking agent; Mix; Be mixed with the cross-linking agent solution that concentration is 700mg/L; Be to add the performed polymer linking agent that the step () of 700mg prepares in every 1L clear water, the weight that is to say performed polymer linking agent in every 1L clear water is 700mg;
3, polyacrylamide solution and cross-linking agent solution are mixed promptly get, wherein, the weight proportion of linking agent is 4: 1 in SEPIGEL 305 in the polyacrylamide solution and the cross-linking agent solution.
Embodiment 3
One, synthetic cross-linking agent
1, according to following weight proportion prepare raw material (* 10kg)
Phenol 3.5, vulkacit H 1.5, formaldehyde 2.5, solidifying agent 2.5, catalyzer 1.25
2, above-mentioned raw materials is joined in the reaction kettle together, mix, heat and make temperature remain 80 ± 5 ℃, under this temperature, carry out polyreaction.
3, behind the reaction 3h, reaction mixture is cooled to normal temperature (25 ℃), promptly get.
Two, preparation adjusting driving agnet
1, clear water and SEPIGEL 305 are mixed; Be mixed with the polyacrylamide solution that concentration is 1200mg/L; Be the SEPIGEL 305 that adds 1200mg in every 1L clear water, that is to say that the weight that contains SEPIGEL 305 in every 1L clear water is 1200mg; Wherein, the molecular weight of SEPIGEL 305 is 1,200 ten thousand;
2, add clear water to high-temperature oil reservoir deep transfer drive in poly-hydroxy phenols linking agent; Mix; Be mixed with the cross-linking agent solution that concentration is 500mg/L; Be to add the performed polymer linking agent that the step () of 500mg prepares in every 1L clear water, the weight that is to say performed polymer linking agent in every 1L clear water is 500mg;
3, polyacrylamide solution and cross-linking agent solution are mixed promptly get, wherein, the weight proportion of linking agent is 2: 1 in SEPIGEL 305 in the polyacrylamide solution and the cross-linking agent solution.
Embodiment 4
One, synthetic cross-linking agent
1, according to following weight proportion prepare raw material (* 10kg)
Phenol 2, vulkacit H 1, formaldehyde 3, solidifying agent 1, catalyzer 0.5
2, above-mentioned raw materials is joined in the reaction kettle together, mix, heat and make temperature remain 90 ± 5 ℃, under this temperature, carry out polyreaction.
3, behind the reaction 2.5h, reaction mixture is cooled to normal temperature (25 ℃), promptly get.
Two, preparation high-temperature oil reservoir deep adjusting driving agnet
1, clear water and SEPIGEL 305 are mixed; Be mixed with the polyacrylamide solution that concentration is 400mg/L; Be the SEPIGEL 305 that adds 400mg in every 1L clear water, that is to say that the weight that contains SEPIGEL 305 in every 1L clear water is 400mg; Wherein, the molecular weight of SEPIGEL 305 is 1,700 ten thousand;
2, add clear water to high-temperature oil reservoir deep transfer drive in poly-hydroxy phenols linking agent; Mix; Be mixed with the cross-linking agent solution that concentration is 1000mg/L; Be to add the performed polymer linking agent that the step () of 1000mg prepares in every 1L clear water, the weight that is to say performed polymer linking agent in every 1L clear water is 1000mg;
3, polyacrylamide solution and cross-linking agent solution are mixed promptly get, wherein, the weight proportion of linking agent is 6: 1 in SEPIGEL 305 in the polyacrylamide solution and the cross-linking agent solution.
Embodiment 5
One, synthetic cross-linking agent
1, according to following weight proportion prepare raw material (* 10kg)
Phenol 4, vulkacit H 3, formaldehyde 1, solidifying agent 3, catalyzer 1.5
2, above-mentioned raw materials is joined in the reaction kettle together, mix, heat and make temperature remain 65 ± 5 ℃, under this temperature, carry out polyreaction.
3, behind the reaction 3h, reaction mixture is cooled to normal temperature (25 ℃), promptly get.
Two, preparation adjusting driving agnet
1, clear water and SEPIGEL 305 are mixed; Be mixed with the polyacrylamide solution that concentration is 1500mg/L; Be the SEPIGEL 305 that adds 1500mg in every 1L clear water, that is to say that the weight that contains SEPIGEL 305 in every 1L clear water is 1500mg; Wherein, the molecular weight of SEPIGEL 305 is 1,200 ten thousand;
2, add clear water to high-temperature oil reservoir deep transfer drive in poly-hydroxy phenols linking agent; Mix; Be mixed with the cross-linking agent solution that concentration is 200mg/L; Be to add the performed polymer linking agent that the step () of 200mg prepares in every 1L clear water, the weight that is to say performed polymer linking agent in every 1L clear water is 200mg;
3, polyacrylamide solution and cross-linking agent solution are mixed promptly get, wherein, the weight proportion of linking agent is 1: 1 in SEPIGEL 305 in the polyacrylamide solution and the cross-linking agent solution.
1 one-tenth colloidality viscosity test of Test Example
It is in 80 ℃ of baking ovens that the adjusting driving agnet of embodiment 1-5 preparation is put in temperature respectively; Its viscosity number of different time sampling and measuring; To investigate adjusting driving agnet gel-forming property in the different time, wherein adopt the Brookfield viscometer under the 6rpm condition, to measure the viscosity of adjusting driving agnet, it is as shown in table 1 to measure the result.
Table 1 adjusting driving agnet gel-forming property viscosity changes
The viscosity test result of adjusting driving agnet gel-forming property shows:
1, the compound adjusting driving agnet in high-temperature oil reservoir deep of the present invention can be applicable to deep chemistry transfer drive, the profile control processing of high-temperature oil reservoir, and compound adjusting driving agnet is under hot conditions, and gel-forming property is good, stablizes, and is applicable to that temperature is the high-temperature oil reservoir more than 70 ℃.
2, the compound adjusting driving agnet in high-temperature oil reservoir deep of the present invention's preparation is a kind of novel movable gel (being colloidal dispersed gel); Realization is to the dynamic plugging of down-hole most permeable zone section; Change the short defective of conventional adjusting driving agnet validity period, adopted compound adjusting driving agnet of the present invention to carry out the method that displacement crude oil is a kind of novel raising RF.
3, the compound adjusting driving agnet gelation time in high-temperature oil reservoir deep of the present invention preparation is adjustable, becoming glue can be used for the high seepage channel on shutoff water filling stratum after 2-5 days, plays the purpose that steady oil is controlled water; Viscosity increases gradually after becoming glue, and gelation time is long, prevents compound adjusting driving agnet block pumps and pipeline, the validity period that has prolonged compound adjusting driving agnet simultaneously.
4, the compound adjusting driving agnet displacement in high-temperature oil reservoir deep viscosity of the present invention is high, and environmental resistance is good, can effectively stop up macropore and string layer.
Need not control the pH of solution when 5, the compound adjusting driving agnet in high-temperature oil reservoir deep of the present invention prepares; Ground viscosity is lower than 100mPa.S during preparation, and the compound adjusting driving agnet at preparation initial stage has higher flowability, flows easily; Be prone to inject the down-hole, be suitable for extensive, the long-time injection.
6, the proportioning of the polymkeric substance of the compound adjusting driving agnet in high-temperature oil reservoir deep of the present invention's preparation and linking agent is low, and promptly polymkeric substance is low with the ratio of linking agent solid content, can significantly reduce the use of chemical reagent, has reduced production cost.
Test Example 2 two-tube non-homogeneous model tests (being the adjusting driving agnet system thing mould research of high-temperature oil reservoir deep)
Simulation Shandong, Xinjiang restrains the oil field permeability variation situation of oozing, and adopts parallel two-tube (diameter is that 5cm, length are 87.21cm) heterogeneous body sand-packed model to carry out oil displacement test, to investigate the compound adjusting driving agnet oil displacement efficiency in high-temperature oil reservoir deep under static conditions.The rate of permeation of high permeability model is 550-600 * 10
-3μ m
2The rate of permeation of low permeability model is 40-50 * 10
-3μ m
2, permeability grade is 11-15 times.
The adjusting driving agnet of the polymer flooding of testing as two-tube non-homogeneous model with the polymer poly acrylamide soln of the compound adjusting driving agnet in high-temperature oil reservoir deep of embodiment 1-5 preparation and reference examples 1-5 respectively carries out oil displacement test.
Testing sequence is following:
1) single tube is tested rate of permeation with clear water respectively;
2) single tube is vacuumized saturated Shandong, back respectively and restrain the crude oil that oozes, wherein, the density of ground crude oil is 0.8878g/cm
3, viscosity is 255.4mPa.s;
3) carry out water drive crude oil after the two-tube parallel connection simultaneously, water drive reaches 98%, water drive oil recovery factor such as table 2 to moisture;
4) carry out compound adjusting driving agnet displacement of reservoir oil test then simultaneously, wherein, the amount of the compound adjusting driving agnet of injection is 0.2 times (0.2pv) of volume of voids, and the RF after the compound transfer drive is as shown in table 2.
The mensuration result of two-tube non-homogeneous model test is as shown in table 2.
The movable gel of the two-tube parallel model of table 2 drives effect (experimental temperature 75 ' C)
The volume of voids multiple of PV---core
Experimental result shows:
1, the compound adjusting driving agnet in high-temperature oil reservoir deep that adopts the present invention's preparation is displacement crude oil effectively, and displacement is respond well, has improved RF, and average recovery ratio has improved more than 8.5%, reaches 8.5-17.6%.
2, the compound adjusting driving agnet in high-temperature oil reservoir deep of the present invention's preparation is strong than the startup ability of polymer flooding to the startup ability of the irreducible oil of the low-permeability layer of non-homogeneous pay; Improved the profit mobility ratio; Improved the RF of low permeability layer, RF has improved 11.3-18.9%.
3, after the compound adjusting driving agnet in high-temperature oil reservoir deep of the present invention's preparation drives there be than obvious variation the flow of high and low infiltration layer, the low-permeability layer flow has raising by a relatively large margin, makes the reserves of low permeability layer obtain obvious startup.
Test Example 3 oil field transfer drive researchs
Adopt the compound adjusting driving agnet of high-temperature oil reservoir of the present invention deep transfer drive linking agent and polymer manufacture to be mainly used in WIW chemical profile control (driving) in the high-temperature oil reservoir, reduce high water-intake interval water regain, improve water injection pressure; Low permeability layer suction in making; Improve and stop up high seepage channel on profile-log of water injection or the plane, improve and inject ripples and volume, improve the water drive situation; And then improve individual well or well group output, reduce moisture.
One, rig-site utilization
1, selects well
According to geology and produce actually, select gram the ooze beautiful eastern 201-X in oil field, beautiful eastern 204-19, beautiful east 203, beautiful eastern 2-42 well in Shandong to carry out the on-the-spot transfer drive profile control test in oil field in 2009-2010 year, wherein, the reservoir temperature of oil well is 70 ℃～125 ℃; The oil reservoir rate of permeation is 20～3000 * 10-3um
2The water source is oil field clear water or sewage, the moisture 70-90% of four-hole well.
2, construction
The clear and definite decreasing water cut and increasing oil purposes of factor such as, water breakthrough direction moisture according to tracer agent, well group;
According to definiteization of factor accent radiuses such as waterflood front, water-flushed zone scope, well spacing, section development degrees; Simultaneously with reference to effectively water sucting thickness, adjusting driving agnet character are calculated definite compound adjusting driving agnet consumption that injects; Wherein, Be chosen in the beautiful eastern 201-X in the same area, beautiful eastern 204-19, beautiful east 203, beautiful eastern 2-42 well, its compound adjusting driving agnet consumption is respectively 4160m
3, 5970m
3, 7500m
3, 3000m
3
The injection of anyization adjustment all should be below formation-parting pressure, considers that simultaneously interlayer trigger pressure difference confirms the injection pressure gradient of zone of interest, and then extrapolates injection pressure.Injection pressure gradient, liquid column hydrostatic pressure, zone of interest trigger pressure and water injectivity index are calculated the operation pressure of setting under the discharge capacity.
According to the reservoir situation of the eastern 201-X of jade, beautiful eastern 204-19, beautiful east 203, beautiful eastern 2-42 well group, confirm that it is 74-160m that individual well injects intensity in the Test Example of the present invention
3/ m, average individual well injects intensity 122m
3/ m, the control injection speed is near the injection speed of each individual well injection allocation, and injection pressure is controlled at below the waterflood system pressure, and operating tool string is annotated zone of interest for the blank tubing list, adopts the design of injection slug to carry out the transfer drive construction, and the slug design is as shown in table 3:
The design of table 3 slug as follows
Specific as follows:
1) leading edge slug: inject low viscous polyacrylamide solution (i.e. the SEPIGEL 305 of low base fluid viscosity) to the down-hole, the injection radius is 2-4m, and main effect is to push local water open, plays buffer action, the validity of protection main body slug;
2) main body slug:, inject LV, medium viscosity, the compound adjusting driving agnet of HV, deep shutoff water breakthrough direction to the down-hole successively according to the order that viscosity raises gradually according to initial injection pressure.Beautiful eastern 201-X, beautiful eastern 204-19, beautiful east 203, beautiful eastern 2-42 well main body slug stage adjusting driving agnet behaviour in service such as table 4:
Table 4 Huas accent well main body slug, trailing edge slug construction table
3) trailing edge slug: inject the compound adjusting driving agnet of HV to the down-hole, protection shutoff slug is not washed open by follow-up injection liquid, the integrity and the anti-scouring capability of protection main body block section;
4) replace slug: inject displacing liquid to the down-hole; Replace the compound adjusting driving agnet of HV that trailing edge slug step is injected; Cross the area that replaces to apart from well radius >=3m, displacing liquid is the polyacrylamide solution of high base fluid viscosity, promptly full-bodied polyacrylamide solution.
3, construction effect (well group effect)
The compound adjusting driving agnet that the polyhydroxy phenol type high temp performed polymer organic crosslinking agent of employing the present invention preparation and polymer poly acrylamide soln are mixed with is fit to the Shandong and restrains ooze oil field transfer drive, profile control; The change accent mode effect of composite slug is better; The oil and water well end is efficient to be 100%, and it is as shown in table 5 to change accent well injection side construction situation; Construction back oil well effect is as shown in table 6.
Table 5 Huas accent well injection side construction summary table
PI value---pressure drop index is reflected at the degree that wellhead pressure descends in the shut-in time, also represents the landing degree of reservoir pressure simultaneously; Judge the necessity of individual well profile control, numerical value is more little, and it is severe to explain that present reservoir pressure descends; It is strong that water filling breaks through degree, so the necessity of profile control is just big more.
The table 6 oil well effect summary sheet that takes effect
Economic and Efficiency Analysis: the 4 mouthfuls of wells of constructing, change adjustment expense and construction cost, 3,780,000 yuan of input expenses; Increase oily 2830t, fall liquid 2800m
3, 1,358 ten thousand yuan of output expenses, input-output ratio 1: 3.6.
Claims (10)
1. the compound adjusting driving agnet of high-temperature oil reservoir is characterized in that comprising polyacrylamide polymers and linking agent, and wherein the weight part proportioning of SEPIGEL 305 and linking agent is 1-6: 1.
2. compound adjusting driving agnet as claimed in claim 1, it is characterized in that said linking agent according to as follows in sequence step be prepared from:
1) prepare raw material according to following weight part proportioning, comprising:
Phenol 2-4, vulkacit H 1-3, formaldehyde 1-3, solidifying agent 1-3, catalyzer 0.5-1.5;
2) said raw material is added reaction kettle, after mixing, polyreaction is carried out in heating under 60-100 ℃ temperature, promptly get.
3. compound adjusting driving agnet as claimed in claim 2 is characterized in that the weight part proportioning of raw material described in the step 1) is: phenol 2.5-3.5, vulkacit H 1.5-2.5, formaldehyde 1.5-2.5, solidifying agent 1.5-2.5, catalyzer 0.75-1.25.
4. like claim 2 or 3 described compound adjusting driving agnets, it is characterized in that step 2) described in temperature of reaction be 80-90 ℃.
5. like claim 2 or 3 described compound adjusting driving agnets, it is characterized in that step 2) described in reaction times of polyreaction be 2-3h.
6. the preparation method of the compound adjusting driving agnet of high-temperature oil reservoir is characterized in that comprising as follows step in sequence:
1) SEPIGEL 305 is water-soluble, be mixed with the polyacrylamide solution that concentration is 400-1500mg/L;
2) linking agent is mixed with water, be mixed with the cross-linking agent solution that concentration is 200-1000mg/L;
3) in polypropylene amine solution, add cross-linking agent solution, stir, promptly get.
7. preparation method as claimed in claim 6 is characterized in that step 2) described in linking agent according to as follows in sequence step be prepared from:
2-1) prepare raw material, comprise according to following weight part proportioning
Phenol 2-4, vulkacit H 1-3, formaldehyde 1-3, solidifying agent 1-3, catalyzer 0.5-1.5;
2-2) said raw material is added reaction kettle, after mixing, polyreaction is carried out in heating under 60-100 ℃ temperature, promptly get.
8. like claim 6 or 7 described preparing methods, it is characterized in that molecular weight＞1,200 ten thousand of SEPIGEL 305 described in the step 1).
9. like claim 6 or 7 described preparing methods, it is characterized in that described in the step 3) that the weight part proportioning of the linking agent in the SEPIGEL 305 and cross-linking agent solution in the polyacrylamide solution is 1-6: 1.
10. one kind like the application of the compound adjusting driving agnet of the said high-temperature oil reservoir of claim 1-5 in high-temperature oil reservoir chemical displacement of reservoir oil exploitation.
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| CN2010105249544A CN102060966A (en) | 2010-10-29 | 2010-10-29 | Synthesis and application in chemical control of HY2008JL high-temperature cross-linking agent |
| CN201110336846.9A CN102533240B (en) | 2010-10-29 | 2011-10-28 | High-temperature oil reservoir composite modifying and flooding agent and preparing method and application thereof |
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| CN201110336846.9A Expired - Fee Related CN102533240B (en) | 2010-10-29 | 2011-10-28 | High-temperature oil reservoir composite modifying and flooding agent and preparing method and application thereof |
| CN201110334720.8A Expired - Fee Related CN102558469B (en) | 2010-10-29 | 2011-10-28 | Cross-linking agent for profile control and oil displacement for high-temperature oil reservoir, as well as preparation method and application for same |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103214639A (en) * | 2013-04-24 | 2013-07-24 | 新疆华油技术服务股份有限公司 | Production method of water-soluble phenolic resin cross-linking agent used for water shut-off and profile control of oil field |
| CN106047324A (en) * | 2016-06-30 | 2016-10-26 | 中国石油大学(华东) | Reinforced gel dispersion deep profile control and flooding agent for low-permeability high-temperature high-salt oil reservoirs |
| EP3647391A1 (en) * | 2018-10-31 | 2020-05-06 | China University of Petroleum (East China) | Skid-mounted dispersed particle gel production device, dispersed particle gel and preparation method and use thereof |
| CN115261005A (en) * | 2021-04-30 | 2022-11-01 | 中国石油天然气股份有限公司 | Modifying and flooding agent and preparation method thereof |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105440233B (en) * | 2015-12-10 | 2017-09-01 | 中国石油天然气股份有限公司 | A kind of fireflood envelope alters agent and preparation method thereof |
| CN107384343B (en) * | 2017-06-27 | 2020-07-21 | 任丘市宏华兴化工有限公司 | High-temperature-resistant oil reservoir profile control water shutoff agent |
| CN111205422B (en) * | 2018-11-22 | 2022-12-02 | 中国石油天然气股份有限公司 | Oily sludge plugging gel and preparation method and application thereof |
| CN113046043B (en) * | 2019-12-27 | 2022-11-04 | 中国石油天然气股份有限公司 | Oil reservoir reinjection water liquid preparation profile control and flooding agent, preparation method and application thereof |
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| CN101033392A (en) * | 2007-03-30 | 2007-09-12 | 盘锦市庆联油田工程技术服务有限公司 | Expansion type flow gel profile controlling water shutoff agent |
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| CN101735421B (en) * | 2009-12-03 | 2012-12-12 | 中国石油大学(华东) | Method for preparing phenolic resin pre-condensation polymer cross-linking agent |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101033392A (en) * | 2007-03-30 | 2007-09-12 | 盘锦市庆联油田工程技术服务有限公司 | Expansion type flow gel profile controlling water shutoff agent |
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| 黎钢等: "水溶性酚醛树脂作为水基聚合物凝胶交联剂的研究", 《油田化学》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103214639A (en) * | 2013-04-24 | 2013-07-24 | 新疆华油技术服务股份有限公司 | Production method of water-soluble phenolic resin cross-linking agent used for water shut-off and profile control of oil field |
| CN106047324A (en) * | 2016-06-30 | 2016-10-26 | 中国石油大学(华东) | Reinforced gel dispersion deep profile control and flooding agent for low-permeability high-temperature high-salt oil reservoirs |
| CN106047324B (en) * | 2016-06-30 | 2018-12-21 | 中国石油大学(华东) | Reinforcing frozen glue dispersion in-depth profile control suitable for hyposmosis high temperature and high salt oil deposit |
| EP3647391A1 (en) * | 2018-10-31 | 2020-05-06 | China University of Petroleum (East China) | Skid-mounted dispersed particle gel production device, dispersed particle gel and preparation method and use thereof |
| CN115261005A (en) * | 2021-04-30 | 2022-11-01 | 中国石油天然气股份有限公司 | Modifying and flooding agent and preparation method thereof |
Also Published As
| Publication number | Publication date |
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| CN102060966A (en) | 2011-05-18 |
| CN102558469A (en) | 2012-07-11 |
| CN102558469B (en) | 2014-05-07 |
| CN102533240B (en) | 2014-05-07 |
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