Optimization of Superheated Steam Huff and Puff Wells Sequence in Heavy Oil Reservoir

Abstract

Production of superheated steam huff and puff wells is affected by reservoir geological characteristics (effective thickness, net gross ratio), the state of development (recovery degree, integrated water-cut) and steam injection parameters (intensity of steam injection, steam injection rate, temperature and degree of superheat. etc.). On the basis of analysis of each factor, All factors set were established by a new specified model and the weight of each factor was determined by the functional correlation between the factors and production of each well. The integrated measured value of all factors was calculated by dimensionless value of each factor through integrated evaluation methods. Statistics results showed that the oil production of each well has perfect proportional relationship with the integrated measured value of all factors, there is the higher the integrated measured value of all factors, the higher the oil production of each well. According to this good correspondence, the integrated evaluation template was formed, and the total coincidence reached 96% with high reliability in the practical application in the Kenkiyak Oilfield, Kazakhstan.

A Numerical Simulation Approach for Superheated Steam Flow during Multipoint Steam Injection in Horizontal Well

“…In unit time, the work done by the friction force on the microelement segment is expressed as follows [23][24][25]:…”

A brief communication on the effect of seawater on water flow in offshore wells at supercritical state

“…That is to say the temperature can be obtained when the pressure is known, which is different from supercritical water. Zhou (2010) and Xu (2011) proposed models for estimating superheated steam flow in the vertical wells and obtained the pressure and temperature profiles by numerical methods (de Almeida et al 2017). Xu et al (2013) added some oil displacement mechanisms of superheated steam to previous models (Fan et al 2016).…”