CN105694839B - A kind of heat from hydrogenation chemistry solution components and its application in horizontal well volume increase - Google Patents
A kind of heat from hydrogenation chemistry solution components and its application in horizontal well volume increase Download PDFInfo
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- CN105694839B CN105694839B CN201610005107.4A CN201610005107A CN105694839B CN 105694839 B CN105694839 B CN 105694839B CN 201610005107 A CN201610005107 A CN 201610005107A CN 105694839 B CN105694839 B CN 105694839B
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
- C09K8/592—Compositions used in combination with generated heat, e.g. by steam injection
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/166—Injecting a gaseous medium; Injecting a gaseous medium and a liquid medium
- E21B43/168—Injecting a gaseous medium
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
Abstract
The invention belongs to technical field of petroleum extraction, and in particular to a kind of heat from hydrogenation chemistry solution components and its application in horizontal well volume increase.The component is by No. 1 solution and No. 2 solution with mass ratio 1：1 mixes, wherein No. 1 solution is calculated by quality and 100%, by 50 55% ammonium nitrate NH4NO3, 8 13% HC fuel, 4.5 5.5% sodium chloride nacl or potassium chloride (KCl), 7 9% nitric acid HNO3, 0.5 3.0% emulsifier and 15 20% water composition；Wherein, emulsifier is polyethylenepolyamine and ready denier oil acid by mass percentage 3:0.5 0.7 mixed solution；No. 2 solution are calculated by quality and 100%, by 22 26% sodium nitrate NaNO2, 25 31% urea CO (NH2)2, 20 25% sodium borohydride NaBH4And 27 31% tetrachloro-ethylene C2Cl4Composition.The present invention not only increases horizontal well yield, while solving horizontal well blockage problem, and technical security is reliably at low cost, while protecting stratum.
Description
Technical field
The invention belongs to technical field of petroleum extraction, and in particular to a kind of heat from hydrogenation chemistry solution components and its in level
Application in well volume increase.
Background technology
In this century, oil, gas well structure, which significantly complicate, in industrial gas oil is intended to horizontal direction structure, to carry
High ore bed drainage area, while thinking that horizontal oil, gas well and lithosphere have larger contact area, hydro carbons in well can be improved
The extraction efficiency and acceleration capacity of substance.The construction of horizontal well, exploitation operation and the inflow of hydro carbons enhancing are substantially distinguished from vertical
The production technique of straight well hydro carbons, due to this point, the method for vertical well is not suitable for horizontal oil, gas well largely.
For example, the acidification of horizontal well can only penetrate into one section several meters in rock stratum of depth, but certain part meetings in this section
It is drilled, the mechanical admixture or drilling fluid and other deposits for exploiting emerged in operation are blocked.It is known to pass through pulse pressure
The strong physics field action that formed is in the method for the nearly wellblock of vertical well, and due to the appearance and size of equipment, design feature and instrument are transported to
The particularity of horizontal well body equally may not apply to horizontal oil, gas well.
There are many known hydro carbons by means of different Fracturing Projects to flow into intensifying method however these methods are very complicated,
It is of high cost, the measure of being prepared in advance is needed, has strict demand simultaneously for the selection of oil, gas well under pressure break, with being related to ore bed
Matter technical characterstic, oil, gas well Distribution Area and all technologies and technological requirement tend not to keep in oil field practice, or
Information of the person for design-build is insufficient, usually leads to water layer rupture and oil, the premature leaching of gas well by the method that pressure break is implemented
Water
Accumulation based on vertical drilling Study on Problems experience, it suffices to say that practical compared with level oil, the potential yield of gas well
The reason of yield reduces is the change of the neighbouring oil-gas Layer nature of oil, gas well, opposite to be produced with the horizontal oil of vertical well, gas well oil
The fundamental cause that amount declines is that drilling well agent acts on horizontal oil, gas well ore bed and to pass through very long period in drilling process, horizontal
Oily, gas well main body is more complicated compared to vertical wells to be subject to stronger deformation process.It is all these that nearly wellblock is caused to be oozed
Permeability reduces, therefore productivity is often only more than the 60% of design, and What is more, and oil, gas well are caused out by the destruction of bigger
Adopt complete interruption.
In the prior art using adding the heat chemistry oil output method of hydrogen to show significant height in business practice
Effect property, but due to oil, the difference of gas well structure, these methods are not particularly suited for the processing of horizontal oil, the nearly wellblock of gas well
Invention content
A kind of application the object of the present invention is to provide heat from hydrogenation chemistry solution components and its in horizontal well volume increase.
The invention is realized in this way:
First, two kinds of working solutions (No. 1 solution, No. 2 solution) are configured.
No. 1 solution is calculated by quality and 100%, by 50~55% ammonium nitrate NH4NO3, 8~13% HC fuel,
4.5~5.5% sodium chloride nacl or potassium chloride (KCl), 7~9% nitric acid HNO3, 0.5~3.0% emulsifier and 15~
20% water composition；Wherein, emulsifier is polyethylenepolyamine aqueous solution and ready denier oil acid in mass ratio 3：0.5~0.7
Mixed solution；Further, the mass concentration of polyethylenepolyamine is 35~45% in polyethylenepolyamine aqueous solution, further,
HC fuel is diesel fuel and mineral oil in mass ratio 1：2~2.5 mixture.
No. 2 solution are calculated by quality and 100%, by 22~26% sodium nitrate NaNO2, 25~31% urea CO
(NH2)2, 20~25% sodium borohydride NaBH4And 27~31% tetrachloro-ethylene C2Cl4Composition.
No. 1 solution manufacturing method：
It is calculated by quality and 100%, first, 15~20% water is added into container, is then added 4.5~5.5%
Sodium chloride nacl or potassium chloride (KCl) add 50~55% ammonium nitrate NH4NO3With 7~9% nitric acid HNO3, it is eventually adding 8
The mixed liquor of~13% HC fuel and 0.5~3.0% emulsifier, wherein the temperature of the mixed liquor of HC fuel and emulsifier
Degree is 70~80 DEG C, and the temperature of remaining solution is room temperature；
No. 2 solution manufacturing methods：
It is calculated by quality and 100%, 27~31% tetrachloro-ethylene C is added first into container2Cl4, addition 25 later~
31% urea CO (NH2)2, it is sufficiently stirred 10~20 minutes, adds 22~26% sodium nitrate NaNO2, it is sufficiently stirred 10~
20 minutes, it is eventually adding 20~25% sodium borohydride NaBH4, it is sufficiently stirred 10~20 minutes.
Further, the volume of No. 1 solution and No. 2 solution and the reaction zone volume equal to oil well, i.e. artificial bottom of a well to level
Oil well and vertical oil well intersection volume；
A kind of application of heat from hydrogenation chemistry solution components in horizontal well volume increase：
The structure of horizontal well of the present invention is as shown in Figure 1, first, in casing 2 (including vertical portion and horizontal part
Point, to which oil well is divided into horizontal well portion and vertical oil well part) and oil pipe 3 (height of oil pipe 3 is equal to vertical oil well
Between highly), horizontal well portion and vertical oil well part boundary position installation packer 7 reduce energy and gas loss, will
The oil well fills water, then by a kind of flexible pipe (flexible pipe 4 is hose, and diameter is less than the diameter of oil pipe 3) 4 to artificial
No. 1 solution is injected in shaft bottom (end of horizontal well portion), since the density of No. 1 solution is more than the density of water, thus is distributed in
Then the bottom of horizontal well portion injects No. 2 solution to horizontal well portion by flexible pipe 4 again, slowly improves flexible pipe 4
The height of liquid outlet makes No. 2 solution be flowed out from flexible pipe 4；Since No. 2 solution densities are more than No. 1 solution density, No. 2 solution
From flexible pipe 4 outflow after sink in No. 1 solution, No. 1 solution and No. 2 solution chemically react later, along with pressure with
Temperature increases releasing heat and gas, gas enter oil-producing formation 1 by perforation 6.
It reacts the heat formed and gas enters oil-producing formation so that horizontal well portion perforation in oil, gas well recovery process
L. P. G in range, bituminous material and paraffin melting, while carrying out macromolecule hydrocarbon pyrolysis in oil-producing formation and discharging outlet
The fractionation of body and gasoline generates the areas Xie Yuceng.Oil, gas well near wellbore zone generate it is jumbo heat, viscosity of crude is greatly lowered.Even
Pulse pressure caused by continuous chemical reaction forms new microcrack, and ore bed permeability is made to improve.
Reaction principle is as follows：
First, the reaction between boric acid hydrogen sodium and water occurs after mixing for No. 1 solution and No. 2 solution:
NaBH4+4H2O=NaOH+B (OH)3+4H2+Q ①
Reaction result causes nitric acid ammonia solution to be dehydrated, to next 3. the decomposition reaction offer of ammonium nitrate may.Meanwhile instead
The hydrogen with Thief zone ability should be 1. discharged, hydrogen can pass through oil well perforation and crack, by asphaltic resin and paraffin
The high temperature pyrolysis of equal substances achievees the purpose that removing nearly well band blocks.
1. reaction is carried out at the same time the reaction between sodium nitrate and urea:
2NaNO2+CO(NH2)2+2H+=2N2+CO2+3H2O+Na++Q ②
Temperature starts the decomposing ammonium nitrate of first stage when reaching 110 degrees Celsius:
NH4NO3→NH3+HNO3-Q ③
Temperature carries out next step decomposing ammonium nitrate when reaching 170 degrees Celsius:
NH4NO3=N2O+2H2O+Q ④
Temperature carries out the violent decomposition reaction of ammonium nitrate, the release along with big calorimetric and pressure when reaching 220 degrees Celsius
Raising:
2NH4NO3=2N2+4H2O+O2+Q ⑤
It can be seen that the present invention not only increases horizontal well yield, while solving horizontal well blockage problem, technology
It is safe and reliable at low cost, while protecting stratum.
Description of the drawings
Fig. 1 is horizontal well structural schematic diagram of the present invention；
Each section is entitled in figure：Oil-producing formation 1, casing 2, oil pipe 3, flexible pipe 4, water 5, perforation 6, packer 7, sandstone and
Flour sand rock stratum 8.
Specific implementation mode
Embodiment 1：The oil well heat from hydrogenation chemistry simulation experiments of Xinjiang oil field 1
The geological conditions and relevant parameter of No. 1 oil well：Reservoir system sandstone and siltstone；Mesoporous low permeability pay；In casing 2
Diameter3 internal diameter of oil pipeArtificial bottom of a well far from ground 4743m, horizontal well portion length 4102~
4743m is located at perforation ranging from 4556.0~4582.0m of horizontal well portion；Produce liquid 0.8t, wherein day before stimulation work daily
Oil-producing 0.2t；
It can show that reaction zone volume is 7250L by data above.Prepare No. 1 solution 4000L or 5200kg, No. 2 solution
3250L or 5200kg.
No. 1 solution composition includes：Ammonium nitrate NH4NO3, HC fuel, sodium chloride nacl, nitric acid HNO3, emulsifier, water it is each
From shared mass percent：55%, 13%, 5%, 8%, 2%, 17%.The quality of each component is respectively ammonium nitrate
NH4NO32860kg, HC fuel 676kg, sodium chloride nacl 260kg, nitric acid HNO3416kg, emulsifier 104kg, water 884kg.
No. 1 solution manufacturing method：
First, in a reservoir, the water of 884kg is added, the sodium chloride nacl of 260kg is then added, adds 2860kg's
Ammonium nitrate NH4NO3With the nitric acid HNO of 416kg3, it is eventually adding 676kg HC fuel and 104kg emulsifiers；Wherein, HC fuel
Mixing temperature with emulsifier is 80 DEG C, and the polyethylenepolyamine 90kg of mass concentration 40% mixes system with ready denier oil acid 14kg
Emulsifier is obtained, (i.e. white oil, alias paraffin oil, white oil, mineral oil are smart obtained by oil to diesel fuel 225kg with mineral oil
Refine the mixture of liquid hydrocarbon) 451kg mixed numbers obtain HC fuel.
No. 2 solution compositions include：Sodium nitrate NaNO2, urea CO (NH2)2, sodium borohydride NaBH4, tetrachloro-ethylene C2Cl4Respectively
From shared mass percent：24%, 27%, 23%, 26%.The quality of each component is respectively：Sodium nitrate NaNO21248kg,
Urea CO (NH2)21404kg, sodium borohydride NaBH41196kg, tetrachloro-ethylene C2Cl41352kg.The order of addition of each component is four
Vinyl chloride, urea, sodium nitrate, sodium borohydride.Often plus a kind of substance, it stirs 15 minutes.
No. 1 solution and No. 2 solution are passed sequentially through flexible pipe 4 and are injected into horizontal well by August 16th, 2014, and closing well is anti-
It resumes production after answering 24 hours.
After being handled by heat from hydrogenation chemistry well stimulation, No. 1 oil well production increasing phenomenon is apparent, produces liquid before stimulation work daily
0.8t, wherein day oil-producing 0.2t；Produce liquid 3.5t, wherein day oil-producing 2.1t after stimulation work daily.
Embodiment 2：The oil well heat from hydrogenation chemistry simulation experiments of Xinjiang oil field 2
The geological conditions and relevant parameter of No. 2 oil wells：Reservoir system sandstone and siltstone；Mesoporous low permeability pay；In casing
Diameter3 internal diameter of oil pipeArtificial bottom of a well 4933m；4530~4933m of net horizontal section；Perforation range
4808.5~4918m；Produce liquid 2.9t, wherein day oil-producing 1.3t before stimulation work daily.
Show that reaction zone volume is 4500L by data above.2500 liters of the solution of preparation 1 or 3200kg, No. 2 solution 2000
Liter or 3200kg.
No. 1 solution composition includes：Ammonium nitrate NH4NO3, HC fuel, potassium chloride (KCl), nitric acid HNO3, emulsifier, water respectively
Shared mass percent：53%, 13%, 4.5%, 9%, 1%, 19.5%.The quality of each component is respectively ammonium nitrate
NH4NO31696kg, HC fuel 416kg, potassium chloride (KCl) 144kg, nitric acid HNO3288kg, emulsifier 32kg, water 624kg.
No. 1 solution manufacturing method：
First, in a reservoir, the water of 624kg is added, the sodium chloride KCl of 144kg is then added, adds the nitre of 1696kg
Sour ammonium NH4NO3With the nitric acid HNO of 288kg3, it is eventually adding 416kg HC fuel and 32kg emulsifiers；Wherein, HC fuel and
The mixing temperature of emulsifier is 80 DEG C, and a concentration of 40% polyethylenepolyamine 30kg and ready denier oil acid 5kg are mixed to prepare breast
Agent, diesel fuel 130kg obtain HC fuel with mineral oil 286kg mixed numbers.
No. 2 solution compositions include：Sodium nitrate NaNO2, urea CO (NH2)2, sodium borohydride NaBH4, tetrachloro-ethylene C2Cl4Respectively
From shared mass percent：26%, 25%, 22%, 27%.The quality of each component is respectively：Sodium nitrate NaNO2832kg, urine
Plain CO (NH2)2800kg, sodium borohydride NaBH4704kg, tetrachloro-ethylene C2Cl4864kg.The order of addition of each component is four chloroethenes
Alkene, urea, sodium nitrate, sodium borohydride.
On March 20th, 2015, No. 1 solution and No. 2 solution are passed sequentially through flexible pipe and is injected into well, closing well reaction 24 is small
When after resume production.
After being handled by heat from hydrogenation chemistry well stimulation, No. 2 oil well production increasing phenomenons are apparent, produce liquid before stimulation work daily
2.9t, wherein day oil-producing 1.3t；Produce liquid 4.8t, wherein day oil-producing 2.9t after stimulation work daily.
Claims (8)
1. a kind of heat from hydrogenation chemistry solution components, it is characterised in that：It is by No. 1 solution and No. 2 solution with mass ratio 1：1 mixing
It forms, wherein No. 1 solution is calculated by quality and 100%, by 50~55% ammonium nitrate NH4NO3, 8~13% HC fuel,
4.5~5.5% sodium chloride nacl or potassium chloride (KCl), 7~9% nitric acid HNO3, 0.5~3.0% emulsifier and 15~
20% water composition；No. 2 solution are calculated by quality and 100%, by 22~26% sodium nitrate NaNO2, 25~31% urea
CO(NH2)2, 20~25% sodium borohydride NaBH4And 27~31% tetrachloro-ethylene C2Cl4Composition.
2. a kind of heat from hydrogenation chemistry solution components as described in claim 1, it is characterised in that：Emulsifier is polyethylenepolyamine
Solution and ready denier oil acid in mass ratio 3：0.5~0.7 mixed solution.
3. a kind of heat from hydrogenation chemistry solution components as described in claim 1, it is characterised in that：HC fuel is diesel fuel
With mineral oil in mass ratio 1：2~2.5 mixture.
4. a kind of heat from hydrogenation chemistry solution components as claimed in claim 2, it is characterised in that：The matter of polyethylenepolyamine solution
Measure a concentration of 35~45%.
5. a kind of heat from hydrogenation chemistry solution components as described in claim 1, it is characterised in that：The preparation of No. 1 solution is first
15~20% water is first added into container, 4.5~5.5% sodium chloride nacl or potassium chloride (KCl) is then added, adds 50
~55% ammonium nitrate NH4NO3With 7~9% nitric acid HNO3, it is eventually adding 8~13% HC fuel and 0.5~3.0% breast
The mixed liquor of agent, wherein the temperature of the mixed liquor of HC fuel and emulsifier is 70~80 DEG C, and the temperature of remaining solution is room
Temperature.
6. a kind of heat from hydrogenation chemistry solution components as described in claim 1, it is characterised in that：The preparation of No. 2 solution is first
27~31% tetrachloro-ethylene C is first added into container2Cl4, 25~31% urea CO (NH are added later2)2, it is sufficiently stirred
10~20 minutes, add 22~26% sodium nitrate NaNO2, it is sufficiently stirred 10~20 minutes, is eventually adding 20~25%
Sodium borohydride NaBH4, it is sufficiently stirred 10~20 minutes.
7. application of a kind of heat from hydrogenation chemistry solution components in horizontal well volume increase described in claim 1~6 any one.
8. a kind of application of the heat from hydrogenation chemistry solution components as claimed in claim 7 in horizontal well volume increase, feature exist
In：The volume of No. 1 solution and No. 2 solution is equal to the volume of horizontal well reaction zone.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102187056A (en) * | 2008-10-15 | 2011-09-14 | Tctm有限公司 | Gas evolving oil viscosity diminishing compositions for stimulating the productive layer of an oil reservoir |
| CN102936492A (en) * | 2012-11-22 | 2013-02-20 | 吉林冠通能源科技有限公司 | Thermochemical yield increase solution composition applicable to low-permeability condensate well |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102187056A (en) * | 2008-10-15 | 2011-09-14 | Tctm有限公司 | Gas evolving oil viscosity diminishing compositions for stimulating the productive layer of an oil reservoir |
| CN102936492A (en) * | 2012-11-22 | 2013-02-20 | 吉林冠通能源科技有限公司 | Thermochemical yield increase solution composition applicable to low-permeability condensate well |
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Inventor after: Han Wei Inventor after: Simono Aleksey Inventor after: Han Xiaosong Inventor after: Zhou Liang Inventor after: Li Junzhi Inventor before: Han Xiaosong Inventor before: Simono Aleksey Inventor before: Han Wei Inventor before: Zhou Liang Inventor before: Li Junzhi |
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Effective date of registration: 20190430 Address after: 130012 Room 101, 4th Floor, No. 11 Residential Building, South Campus, Jilin University, Changchun High-tech Development Zone, Jilin Province Patentee after: Jilin Guantong Energy Technology Co., Ltd. Address before: 130012 No. 191 Chaoqun Street, Changchun High-tech Zone, Jilin Province Patentee before: Jilin Guantong Energy Science & Technology Co., Ltd. |
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