The super heavy oil of Tahe Oilfield has high geological reserves

deep burial

and fluidity in the reservoir. During lifting

as the temperature decreases

the viscosity increases and the flow capacity decreases

leading to the impossible production. Therefore

recovery mainly adopts dilute oil to reduce adhesion. With the continuous drop in oil prices

the influence by the sales price difference between the added dilute oil and the produced heavy oil

and the energy consumption caused by the repeated work of dilute oil

lead to the decrease of the benefit. In order to improve the production efficiency of super heavy oil reservoir

the technology exploration

technical tackling and pilot test are carried out from three aspects of stratum

wellbore and surface. The application of mineral-insulated copper-clad cable heating and nano thermal insulation tubing has achieved remarkable results

saving 98 600 tons of dilute oil. It can be popularized in such super heavy oil reservoirs. The breakthrough of temperature-resistant and salt-resistant water-soluble viscosity reducer and the progress of the sulfur-resistant screw pump lift technology provide sufficient conditions for the efficiency recovery of super heavy oil reservoirs. The principle of efficient ground gathering and transportation is simple

but involves the network transformation and equipment upgrade

with high cost and complex implementation. Now the test equipments are in preparation. As the technology of formation viscosity reduction is very difficult

it is in the stage of technical demonstration. The development and integrated application of low-cost recovery technology for super heavy oil improve the development benefit. And after general consideration

the bottleneck is found out according to the specific well conditions

and the matching technology in the technical system is select

so as to achieve the goal of efficiency recovery for super heavy oil

and improve the ability of oilfields to cope with low oil prices.