ABSTRACTSOF SELECTED ARTICLES

Study on Delaying the Aging of Molecular Sieves of Yingmaili Gas Field.

WU Jingqing，HOU Xinli，LI Zhengtao，LIU Yang，CUI Can(PetroChina Tarim Oilfield)2018，8（2）：01-05

The core part of natural gas processing system is the molecular sieve dehydration unit for Yingmaili Gas Field.The unit operating conditions affect the quality of delivering gas and light hydrocarbon production directly.Besides of the expensive price,molecular sieve packing has short service life,long replacing period and massive labor consumption.To solve the problem,this paper introduces an effective method to delay the aging of molecular sieves as well as reduce the cost of molecular sieve replacement.Significant improvement has been received in practical application.

Yingmaili gas field；molecular sieve；dehydration；delay the aging

Research on Recycling Technology of Brine Wastewater for Heavy Oil Development

LI Lei(Daqing Oilfield Engineering Co.,Ltd.)2018，8（2）：06-09

As the increase of production proportion of heavy oil year by year,the problems of water balance and brine wastewater discharge in heavy oilfield are becoming more and more prominent.With the increasing implementation of the national environmental protection policy,the digestion of brine wastewater will restrict the development of oil fields.Based on the analysis effluent quality from the field,the technical route to realize the recycling of brine wastewater is put forward,and relevant field tests are carried out.The results show that the high hardness brine wastewater which is removed hardness by dosing chemical agent,the mass fraction of Na+/Cl-is maintained at 80%-90%,the hardness is no more than 500mg/L.The quality of disposal brine wastewater achieves the regeneration brine standard,and can be used for next generation process of softener.The recycling technology of brine wastewater can solve the environmental pollution problem caused by saltwater emission,reduce the consumption of fresh water and industrial salt,and has quite good environmental benefits and economic gains.

heavy oil;high hardness;brine wastewater;recycling

Research on the Integration of Drilling Waste Solidification and Drilling Fluid Treatment

XIE Shuai(Drilling Technology Research Institute in Jilin Oilfield)2018，8（2）：10-13

At present,the environmental drilling technology in Jilin oilfield adopts the no landing collection and centralized processing mode of waste.It has stronger adaptability and better handling capacity,but with the development of technology,its drawbacks are gradually emerging.On the one hand,the drilling fluid that can continue to be used in waste accounts for about 1/3 of total emissions.Direct harmless treatment of these drilling fluids not only causes resource loss and waste,but also increases the cost of processing.On the other hand,the treated wastes are not properly disposed.This paper puts forward new ideas with drilling waste solidification and processing drilling fluid integration,through the experimental research,the technology can improve the utilization rate of drilling fluid,achieve the goal of a waste leaching solution after curing,meet the"Integrated Wastewater Discharge Standard"GB 8978-1996 two emission standards,the compressive strength of more than 1.5 MPa.Curing substance can be used for bedding plant and Wells Road.This technology has good social and economic benefits.

drilling waste;drilling waste solidification;reuse technology;environmental protection testing

Energy Saving Optimization Technology of Water Injection System in Deep and Low Permeability Reservoir

WANG Jiangshun(No.4 Oil Production Plant of Zhongyuan Oil Field Branch)2018，8（2）：14-17

For the difficulty of water injection,various pressure levels,complicated water injection technology at deep and low permeability reservoir,four innovative technologies including pressure classification and water injection pressure energy saving and so on.These technologieshas effectively solved the technical problems of the well under injection,the closure of the valve group and the difficult facilities matching in the ultra-high pressure water injection system of the oil field and improved energy efficiency level of the water injection system.The high efficiency and smooth water injection of the deep and low permeability reservoirs has been realized,and it has popularization application value in various oil fields.

deep low permeability reservoir;pressure level;water injection process;water well under injection;water injection system;smooth water injection.

Application of Flooding Technology of Oily Sludge in Xigang Oilfield

LI Guisheng(No.5 Oil Production Plant in Dagang Oilfield)2018，8（2）：18-20

Oil sludge from oil field brings some harm to the production and development of oil field and affects the normal production and life of the oil field.The Gangxi oil field takes the lead in carrying out the research of oil sludge flooding technology which obtains success and the obvious effect of increasing oil and precipitation.In order to solve the problem of sewage sludge pollution,it is used to prepare granular profile control and water shutoff agent,which can be used in the treatment of sewage sludge.Through the study and field application of the two technologies,not only the overall resource utilization of oily sludge is achieved but also the effect of oilfield development is improved,production cost is reduced and the effect of oily sludge on production in alleviated.This technology has a certain popularization value and application prospect.

oily sludge;Profile control mechanism;Oil content;contaminated;application

Technical Discussion on the Application of Photovoltaic Power Generation Between Valve Groups in Daqing Peripheral Oilfield

YOU Linlin(Power Engineering Design Institute of CNPC)2018，8（2）：21-23

According to the Daqing oilfield valve group is located in remote,widely distributed,low electricity load,high construction costs,electricity theft and other serious problems,we adopt the Daqing oilfield resources and photovoltaic power generation technology to install solar panels in the valve group rooftop to realize the photoinduced volt effect on semi-conductor interface to transform light energy into electrical energy.By matching inverter,controller and battery,the direct current generated by solar energy is converted to alternating current,and it can satisfy the demand of no sunshine in 5 days.The photovoltaic power generation technology can not only realize the near power supply,save the land resources,but also have no noise and no pollution.It is an ideal clean energy source.Compared with the traditional power supply mode,photovoltaic power generation technology can save 23 thousand yuan in the early stage construction,and the operation and maintenance at later stage can save 6 thousand yuan,which has good economic results.

valve group； Photovoltaic power generation； environmental protection； energy conservation

The Application of Alkaline Soil Slight Adjustment Technique in Putaohua Oilfield

LI Lingquan(No.7 Production Plant in Daqing Oilfield Co.,Ltd)2018，8（2）：24-27

The Putaohua oilfield has entered into a period of high water cut development,with the increase of water injection,the ineffective circulation of injected water is serious.It is more and more difficult to control water content and tap the oil potential,besides the contradiction between layers is aggravating,the difference between the utilization of layers is increasing.In response to these problems,in order to effectively adjust the injection profile of layers and improve the development effect of oilfields,based on the remaining oil potential and genesis in the Putaohua oilfield and the reservoir heterogeneity,we select the natural alkaline earth as profile control agent and use the lignin to assist plugging water.Through the use at 310 wells,the injection pressure of injection well increases significantly,and the adjustment effect of strata suction profile is obvious,besides the main purpose of the percentage of water absorption decreases significantly,up to now,the accumulated oil has been increased by 7738t,and the economic benefit has been 18.94 million after deducting construction costs.Practice proves that the technology of lignin-alkaline earth slight adjustment can effectively improve the utilization of injection profile and reservoir for oilfields with low permeability and large degree of development in the interlayer and large potential for tapping in the reservoir,and improve the development of the oilfield effect.

Alkaline soil;slight adjustment profile;field test

Optimization of Oil and Gas Separate Transportation Process to Achieve Zero Emission of Natural Gas in Remote Oil Wells

HUANG Xuebin,JIN Wengang,LI Xiaoqi(Zhongyuan Oildfield Branch in Sinopec)2018，8（2）：28-32

The remote fault blocks developed in the Wen Zhong and Wen Dong oilfield in recent years have the characteristics of low permeability,high gas and oil ratio,low production and so on,which has no condition to construct station for collection and transportation and there is a waste of natural gas.The technical personnel reform design ideas to develop the technology of ground gathering and transportation with the features of crowding and modularization.The zero emission of natural gas in remote oil wells is realized by tri-phase separate transportation of oil,gas and water.Adoption of this technology in field application not only increases the recovery and utilization of natural gas in remote wells and the income of light hydrocarbon recovery but also reduces the cost of oil pulling in single well and environmental pollution,which brings obvious economic benefits and provides a technical reference for the efficient development of similar remote oil wells in the future.

remote oil wells;crowding;gathering and transportation;oil and gas separate transportation;natural gas recovery

Operation Optimization of Sewage Evaporation System in Hade Four Joint Stations

ZHAO Song,DENG Chuan,LIANG Xiaobing,ZHANG Lei,YUAN Huan,JIANG Kui(Development Division In Tarim Oilfield)2018，8（2）：33-34

In view of the problems of evaporation pool of sewage evaporation system operating at high liquid level in long term and surface oil polluting the surrounding environment in Hade four joint station,comprehensive optimization of operation way of sewage evaporation system is conducted to systematically improve the system function.In combination with HSE standardized station construction,the management of sewage evaporation system is strengthened to make it become a standardized sewage evaporation system,eventually,realize the sewage waste oil recycling,not only satisfy the zero discharge of sewage waste oil,and solve the long existing problems in the process of production.This kind of innovative idea and management experience is worth learning by other production units.

water and oil collection;pollution;evaporating pool

Technical Transformation of Atmospheric and Vacuum Distillation Unit

JIA Zhonghui(Petrochina Dagang Petrochemical Company)2018，8（2）：35-38

In order to ensure the safety,stability and long term operation of the equipment,intelligent response to the electric desalting system is carried out during maintenance,and the ultrasonic demulsification technology is reformed.After transformation,the salt content reaches 1.22mg/L,which is reduced by 39.9%compared with before.The electricity consumption is 0.104kWh/t,which is 90.7%lower than that before the transformation 1.121 kWh/t.At the same time,the crude oil demulsifier and crude oil decalcification agent are discontinued,which reduces the cost of three agents.The top oil and gas and condensing system is highly controlled to 150 degrees through the layout optimization and operation adjustment,and the dew point corrosion area is transferred to the corrosion resistant air cooled bundle,which can obviously slow down the corrosion rate.The decompression system is retrofit through heating furnace,material upgrading and technological process modification of the tower,and the pressure relief rate is increased by 2.74%compared with before.The corrosion resistance and economic benefits have been improved.

corrosion；technical transformation；energy saving and consumption reducing;benefit

Practice and Cognition About Improving the Hade Oilfield Sewage Treatment Effect

YUAN Huan,WANG Ziyu,LIU Liangyu,CHEN Bo,YU Xiaotong,ZHAO Song(Tarim Oilfield Company Development Department hade Operation District of Xinjiang Korla)2018，8（2）：39-41

The oil separation tank in Hade Oilfield sewage treatment plant plays an important role in the waste oil recovery and discharge standards achieving.But with the increase in service life,the problems of poor oil isolation,high frequency of transportation,high output of hazardous waste and so on gradually appear.In combination with the field practice,Hade Oilfield adopts some renovation strategies such as changing the oil separating pool from parallel to series,adding waste oil temporary storage tank and so on to increase the oil separating effect of oil separating pool,reduce the amount of oil intake in the evaporation pool,reduce the transport frequency of the tanker and the number of hazardous waste transport.At the same time,through the self-made floater level meter,the detachable guardrail is installed,the warning signs of the hazardous waste are set up,and the system of prevention and control of the environmental pollution is open to promote the field management standards and provide reference for the treatment of oily sewage in the same industry.

Oil separating pool;renovation;oil separating effect;frequency of transport;transport of hazardous waste

Thoughts on Comprehensive Development and Utilization of Geothermal Resources in Daqing Oilfield

ZHANG Hanpei,ZHU Lin(Daqing Oilfied Engineering Co.,Ltd)2018，8（2）：42-43

Through the investigation and analysis of geothermal resources in Daqing oilfield,this paper expounds the most realistic way of comprehensive development and utilization of geothermal resources in the oil field and the effective way and development direction to improve the utilization efficiency of geothermal resources,and puts forward some suggestions for the comprehensive development and utilization of geothermal resources in the oil field.

Daqing oil field;geothermal resources;abandoned wells;development and utilization

Development and Application of High Shear Stirring Device for Preparation of Fracturing Fluid

LIAO Bolan,WANG Xiaobao,LU Yaping,PAN Shewei(Beijing Mining and Metallurgy Research Institute)2018，8（2）：44-46

A high shear stirring device for fracturing fluid preparation realizes that the viscosity of fracturing fluid is released quickly in a short time and can solves the problem of high energy consumption,low efficiency and poor liquid distribution in the existing fracturing fluid mixing plant.The device is widely used in the engineering of each liquid distribution station,which improves the quality of fluid distribution and promotes the energy saving and environmental protection during the preparation of the fracturing fluid.

fracturing fluid;preparation;high shear agitation,energy saving and environmental protection

The Exploratory Application of Electric Submersible Plunger Pump on Horizontal Well

ZHU Junqiong(No.8 Oil Production Plant in Daqing Oilfield Co.,Ltd)2018，8（2）：47-49

The horizontal well technology is one of the effective ways of development in low permeability oilfield.It plays an important role in the development of oil fields.With the limit of the structure of the horizontal well,there are some problems during the adoption of pumping unit to lift such as the difficulty of falling into the barrel pump,serious eccentric wear of rod and tube,high flowing pressure,low system efficiency etc.In order to improve the deliverability of the horizontal well,the application of electric submersible pump overcomes the weakness of well pump units.On the basis of assuring the normal production of horizontal well,annual daily electricity saving achieves 78 kWh,direct electricity-saving benefit is￥489,700,saving of initial investment is￥742,000,operating cost saving achieves￥540,000.Better energy-saving effect is achieved and the control effect of investment is remarkable.Also,the pump inspection period is prolonged and normal production of special horizontal wells is realized.

electric submersible pump;horizontal well;energy-saving;system efficiency

Wellhead Sampling Technology of High Gas Well

LIU Feng,FAN Xinzhong,MA Rong(Zhundong Oil Production Plant in Xinjiang OilField)2018，8（2）：50-51

When sampling in oil well with high gas content,high pressure can cause splashing of oil and gas mixture,which leads to crude oil pollution to operation staff,wellhead and ground,also low efficiency sampling.Meanwhile,the released gas will cause the risk of poisoning to operating staff.In order to solve the above problems in production field,this paper proposes that multiple function sampling device is installed at the wellhead to improve the sampling accuracy and working efficiency and reduce the environment pollution when sampling.

oil well with large gas content;oil well sample;sampling device;environmental pollution

Research on the Establishment of Energy-saving Standard System in Daqing Oilfield

ZHAO Dan(Daqing Oilfield Technical Supervision Center)2018，8（2）：52-54

In light of the development of energy saving in Daqing Oilfield,the establishment of energy saving standard system is researched.Firstly,the main problems are found by analyzing the current situation of energy saving standard system.Then,founding rules and steps of standard system is proposed,the steps are the energy saving standard collecting,energy saving standard architecture defining and energy saving standard list creating.Finally,the future work focus is presented.Energy saving standard system plays a guiding role in work,which improves the energy saving management level of the enterprise.

energy-saving standard;standard system;energy-saving standardization