| 摘要 |
FIELD: oil and gas industry.SUBSTANCE: development method of heavy oil or bitumen mine field with control of heat carrier pumped to the well involves construction of upper injection well and lower production well with horizontal sections located one above another, pumping of heat carrier through horizontal injection well with warming-up of formation, development of a steam chamber and extraction of product through horizontal production well, picking-up of thermogramme of steam chamber, analysis of the warming state for uniform warming-up and availability of thermal spikes, and considering the obtained thermogrammes, uniform warming-up of steam chamber is performed by changing warming-up zones. During construction of wells, their horizontal sections are equipped with filters dividing those sections into zones. On the string head for pumping of heat carrier, each of those is equipped with independent pipelines. Two parallel pipe strings, each of which is equipped with a bottom-hole flow pulsator are lowered to an injection well; at that, outlet holes of pipe strings are arranged in the filter in initial and end zones of the horizontal section of the injection well and separated from each other with a packer, and on the head of the injection well, pipe strings are connected via independent pipelines to a flow switch providing heat carrier pumping simultaneously to both pipe strings or to one of the pipe strings depending on the steam chamber thermogramme picked up in the production well; heat carrier breakthrough from the steam chamber to the production well through a more heated zone is excluded by pulsating pumping of heat carrier between initial and end zones of the horizontal section of the injection well.EFFECT: control of heat carrier pumping to a productive formation, reduction of the time required for heating of a steam chamber, improvement of operating efficiency of the steam chamber, provision of uniform and full development of heavy oil or bitumen resource in a non-homogeneous manifold of productive formation, and excluding heat carrier breakthrough to a horizontal section of the production well.2 dwg |
