| 摘要 |
The system comprises a horizontal production well P, at least part of the production well located in a portion of the hydrocarbon-bearing formation. A horizontal heating well H is also provided, at least part of the heating well located in a portion of the hydrocarbon-bearing formation; wherein the heating well comprises a main well and a plurality of smaller bore lateral wells extending into the hydrocarbon-bearing formation. The smaller bore lateral wells improve heat distribution within the formation, and so fewer heating wells are required to achieve the same effect as using heating wells without smaller bore lateral wells. In the embodiment of Figure 2, a repeating hexagonal structure of heating wells H is shown. A production well P is located substantially at the centre of each hexagonal arrangement of heating wells. |
