Sand control method when the choice must consider factors

Sand control method when the choice must consider factors
(1) completion types: common way of well ultra lightweight proppant with open hole completion and casing perforation completion. For crude oil viscosity on the high side, without water, gas interlayer with single reservoir section cementation sandstone can consider advanced gravel packing sand control to the unaided eye, in order to improve the seepage area, reducing reservoir damage, higher capacity.
The complex relationship of oil, gas, water, intercalation of Wells with casing perforation completion should be taken into account. Can be carried out with the first or early gravel pack sand control pipe.
(2) the completion interval length: mechanical sand control, generally without being limited by the interval length, such as sandwich thicker, can consider to block sand control. Chemical sand control is mainly proppant manufacturers for short hole formation.
(3) the formation physical property, chemical sand control on the formation sand with wider range of adaptation, especially applicable to the fine siltstone. But in the oil well, high water cut period, the success rate of sand. ECP arch sand control is suitable for high shale content, sand production is not serious in medium and low permeability formation. Wire wrapped screen gravel packing requirements for grain size, permeability, heterogeneity is not high, but the silty sand rock is not applicable. Sand filter tube sand control generally applies only to medium and thick sandstone.
(4) the wellbore and wellsite conditions: slimhole, abnormal high pressure layer, double chemical sand control completion of the upper strata appropriate is used, in addition, the chemical sand control must pay special attention to the reservoir temperature, because it has a important effect on chemical curing. If the scene without drilling rig (or rig) can't to do mechanical sand control.
(5) the capacity loss: no matter what kind of sand control methods, should be on the premise of control sand production, minimize the oil (gas) well productivity loss. Arching, by contrast, sand control capacity loss minimum, but poor stability of sand; The highest open hole gravel pack sand control capacity, as long as conditions permit should give priority to choose; Fine siltstone easy cause ordinary sand filter tube jam, lead to sharp decline in capacity, should not be used sand filter tube sand control; For gravel pack wire wrapped screen tube or chemical sand control technical measures should be adopted in the construction of reasonable matching, maximize maintain oil well productivity.
(6) cost, construction cost is an important factor in choosing sand control technology, but also want to consider the long-term comprehensive economic benefits of sand control.