阿根廷稠油技术课件

1、阿根廷稠油技术,1,阿根廷项目稠油开发技术,阿根廷稠油技术,2,目 录 一、基本情况 二、存在的问题 三、推介技术 （一）井筒降粘开采技术 （二）油层化学降粘技术,阿根廷稠油技术,3,一、基本情况,Analyze a down hole solution for High Viscosity fluids Ensure the continuous production in Piedra Clavada and Sur Piedra Clavada fields. Reduce the Failure Index. Test the available technology,阿根廷稠油技术,

2、4,一、基本情况,Cerro Grande Block is located in Piedra Clavada Field. This area has fluids with high viscosity oil, paraffin and asphaltens. The average depth is 2000 meters. Sur Piedra Clavada Field in one of the most important areas under development in Oxy Argentina. There is sector of SPC where the oi

3、l characteristics show high viscosity (SPC-1087 area). The average depth is 1500 meters. The wells in SPC 1087 area have no or low production since the completion. It produce a lack of reserves and stop the development in that direction. This fluid characteristic produces a high Failure Index, incre

4、asing production costs and production losses,阿根廷稠油技术,5,一、基本情况,Oil Characteristics in PC area,阿根廷稠油技术,6,一、基本情况,Oil Characteristics in PC area,阿根廷稠油技术,7,一、基本情况,Oil Characteristics in SPC area,阿根廷稠油技术,8,一、基本情况,Oil Characteristics in SPC area,阿根廷稠油技术,9,一、基本情况,Oil Characteristics in SPC 1087 area,阿根廷稠油技术

5、,10,二、Problems Conclusions,There is a high rate of production losses associated to the fluid conditions. Reduced flow rates; Lost production hours (down-time); High operating costs High workover/pulling costs The fluids flow from the reservoir to the wellbore. There are some problems to extract the

6、fluids from the well. An auxiliary methodology is necessary to help fluid lifting,阿根廷稠油技术,11,一）井筒降粘开采技术 根据实验室加热降粘情况，大于50时粘度小于500mPa*S的油井采用电加热、井筒加药降粘、磁降粘等处理井筒粘度的技术生产。 （二）油层化学降粘技术 大于50时粘度大于500mPa*S的油井，采用化学吞吐降粘、化学降粘驱油技术生产,三、Techniques introduction,阿根廷稠油技术,12,一）井筒降粘开采技术 1.Hollow Rod Electric Heating Tec

7、hnology,三、Techniques introduction,Structure,The intermediate frequency electrical heating system consists of four parts: The intermediate frequency power； Hollow rod Special heating cable Pump for heavy oil,阿根廷稠油技术,13,一）井筒降粘开采技术,1.Hollow Rod Electric Heating Technology,阿根廷稠油技术,14,Cable Winch With So

8、ft Cable,1.Hollow Rod Electric Heating Technology,一）井筒降粘开采技术,阿根廷稠油技术,15,The heating current generates skin effect in the inner wall of hollow rod when the single phase current passes heating cable and hollow rod; the current gathers in the inner wall, the outer wall of hollow rod are uncharged,Princ

9、iple,Heavy oil,1.Hollow Rod Electric Heating Technology,一）井筒降粘开采技术,阿根廷稠油技术,16,The Feature of Heating Soft Cable,Cable OD:16.5mm Temperature resistance: 205 Service life: 2 years Total tension resistance at 1000m 20KN,Hollow Rod Technical Parameters,Parameters,1.Hollow Rod Electric Heating Technology

10、,一）井筒降粘开采技术,阿根廷稠油技术,17,Application,Take COPAL-7 for example, it is located in Mexico, belonging to PEMEX. Due to heavy oil, in most cases, COPAL-7 had been shut in. After implementing EHT, not only can it produce smoothly, but the production also dramatically increased from 8t to 29t,1.Hollow Rod El

11、ectric Heating Technology,一）井筒降粘开采技术,阿根廷稠油技术,18,Application,EHS has been applied in more than 1700 wells at home and abroad, such as Kazakhstan, Russia, Mexico , Syria, etc. It increases the oil temperature efficiently, and improve fluidity and solve lifting problem,1.Hollow Rod Electric Heating Tec

12、hnology,一）井筒降粘开采技术,阿根廷稠油技术,19,Principle Waste water which had been treated be pumped through surface pipe to wellhead, then flow into the hollow rod through a check valve and inject into the tubing up the pump, mixture with crude oil pumped to form the emulsion oil in water, the problems of viscous

13、oil wells with high back pressure can be solved due to large amount of mixed fluid,2.Viscosity Break By Physical and Chemical Mixed Water by Hollow Rod,一）井筒降粘开采技术,阿根廷稠油技术,20,Water-blended system equipment hollow rod down hole check valve high pressure hose,System technology requests: Well head press

14、ure：3-4Mpa； temperature：60-90； volume：make the water cut of well fluid more than 80,Hollow water-blender process,2.Viscosity Break by Physical and Chemical Mixed Water by Hollow Rod,System structure,一）井筒降粘开采技术,阿根廷稠油技术,21,Process Principle: Using the lipophilic forces of self-diffusion viscosity redu

15、cer system, diffuse into the oil phase through the oil-water interface to reduce the number of heavy oil molecules together, so that the acting force between the heavy oil molecules weaken, thus reducing the viscosity of heavy oil and improve the mobility of heavy oil, to achieve reservoir viscosity

16、 reduction purposes,Principle sketch map,2.Viscosity Break By Physical and Chemical Self-diffusion Viscosity Reducer,一）井筒降粘开采技术,阿根廷稠油技术,22,temperature160 ； Salinity aqueous 2.2105mg/l； when the system volume is 400mg/l800mg/l时，viscosity reduction97,2.Viscosity break by physical and chemical self-dif

17、fusion viscosity reducer,一）井筒降粘开采技术,阿根廷稠油技术,23,It can be used for wells group viscosity reduction by centralized distribution and metering, achieving the overall system management,2.Viscosity Break By Physical and Chemical Self-diffusion Viscosity Reducer,一）井筒降粘开采技术,阿根廷稠油技术,24,高效防蜡防垢设备工作示意图,The appa

18、ratus, connected with alternative current, would generate changing electromagnetic field. Through the magnetic conductivity of the tubing, electromagnetic field would cover all the liquid in tubing. Wax molecules，affected by electromagnetic field, are polarized, then the wax crystals would become sm

19、aller, and the adhesive force between molecules would reduce. The molecular arrangement would change from disorder to order, which could restrain wax-crystal gathering and reduce the liquid viscosity, and improve liquidity,Principle,3.Electromagnetic Paraffin Control,一）井筒降粘开采技术,阿根廷稠油技术,25,Oil Well W

20、ax Scale Control Unit Specifications,Parameters,3.Electromagnetic Paraffin Control,一）井筒降粘开采技术,阿根廷稠油技术,26,Heavy oil and the physical properties of oil are poor. Pumping unit temporarily suspending , stuck pump often occurs when starting again; The viscosity and wax content are very high. Wax deposit

21、and scaling are serious in wellbore, and well-flushing cycle is short; The individual well producing rate is low, and swabbing parameters are smaller. After flushing, it would take a long time for period of recovery production, and would seriously damage the oil formation; Due to dead oil and wax, i

22、ts difficult to test liquid surface wave,Applicable scope,3.Electromagnetic Paraffin Control,一）井筒降粘开采技术,阿根廷稠油技术,27,Take N1-3-175 and E22-21, located in Daqing Oilfield, for example, both of them contain high wax, and well-flushing period are both 30 days, and often could not test liquid surface wave

23、 due to heavy oil, . During tem months, N1-3-175 occurred 4 times stuck pump, and E22-21 occurred 3 times stuck pump,Application,3.Electromagnetic Paraffin Control,一）井筒降粘开采技术,阿根廷稠油技术,28,Through using the apparatus, the well-flushing period of the wells had been extended from 30 days to 334 days and

24、210 days respectively. The liquid surface wave could be tested normally, and effectively reduce viscosity, and production operation run properly,Application,3.Electromagnetic Paraffin Control,一）井筒降粘开采技术,阿根廷稠油技术,29,高效防蜡防垢设备工作示意图,The amount of electricity is about 8 kw.h/d. It is high cost-effective f

25、or wells with heavy wax,Experience,3.Electromagnetic Paraffin Control,一）井筒降粘开采技术,阿根廷稠油技术,30,三、Techniques introduction,二）油层化学降粘技术 大于50时粘度大于500mPa*S的油井，采用化学降粘吞吐、化学降粘驱油技术生产,阿根廷稠油技术,31,二）油层化学降粘技术,1、水溶性自扩散体系性能,体系浓度对降粘效果的影响（50,体系浓度为400mg/L时，可使粘度为928074240mPas的不同区块原油降至为176290mPas,阿根廷稠油技术,32,二）油层化学降粘技术,矿化度对体系降粘效果的影响（50,矿化度对体系降粘效果没有影响,阿根廷稠油技术,33,体系浓度对稠油粘度的影响(mPas,二）油层化学降粘技术,气油比23.8