By Shouwei Zhou, Fujie Sun
This publication investigates sand creation difficulties within the improvement of unconsolidated sand reservoirs and indicates novel technical suggestions and enhancements to sand administration issues.
This ebook is split into six chapters: (1) geologic features of unconsolidated sand heavy oil reservoirs and suggestion of sand administration expertise; (2) sand construction mechanisms and its influence on reservoir petrophysical caliber; (3) sand construction volume prediction and good productiveness review tools, particularly for fluid-solid coupling prediction version; (4) finishing touch know-how for sand administration; (5) sand circulate in good bore and floor processing; (6) the appliance of sand administration expertise in China’s Bohai heavy oil field.
Readership: Petroleum reservoir engineers and creation managers worldwide.
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Additional resources for Sand Production Management for Unconsolidated Sandstone Reservoirs
Sample text
MD) Increment of perm. (%) Cumulative produced sands (%) Perm. (mD) Increment of perm. (%) Cumulative produced sands (%) Perm. (mD) Increment of perm. 23%) Diameter of produced sand particles (μm) Figure 2-6 Influence of sand production of different particle sizes on permeability changes. The formula for calculating increase of porosity resulting from massive sand production after a series of derivation is as follows: (1 i ) 100 where Δϕ refers to porosity increment (%), η refers to sand production weight ratio (%), and ϕi refers to initial porosity of samples (%).
When the sand production rate is 2%, the major diameter range of increased throats is 5 to 10 μm, followed by 10 to 15 μm. In extreme situation, the diameter range of increased throats is between 15 and 20 μm or even larger than 20 μm. 3.
Influence of sand production To produce with sand can greatly improve well productivity. Generally, sand concentration at the beginning of well effluent can be over 20%, which can result in the failure of normal production. 5 to 1 year with the production of oil and sand, and oil rate will increase continuously and tend to be stable. 2. Influence of solution gas At the beginning of putting on production, foam oil does not form because of high well bottom pressure. Foam oil begins to form with the drop of reservoir pressure after producing for some time.