| Título: | Study and Application of a New Complex Plug Removal System |
| Autores: |
Jin, SHI; Drilling engineering technology company, Shengli petroleum engineering Co., Ltd, Sinopec, Dongying, China. Licheng, HE; Tarim Shengli Drilling Company, Shengli petroleum engineering Co., Ltd, Sinopec, Korla, XinJiang, China. Xiaoyu, WANG; School of Petroleum Engineering, China University of Petroleum (Beijing), Beijing, China. |
| Fecha: | 2013-06-30 |
| Publicador: | Advances in Petroleum Exploration and Development |
| Fuente: |
 |
| Tipo: |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article |
| Tema: |
Acidization; Second damage; Complex plug removal system; Deep penetration; Rock skeleton |
| Descripción: | Aiming at solving small effective acid reaction range and causing second damage in the acidizing in low permeability reservoirs, a new kind of deep penetration and little damage complex plug removal system was developed through laboratory research, which consists of an organic acid, a phosphoric acid, an ammonium organic acid, an ammonium fluoride and a strong oxidizer. The properties were evaluated and the results indicate that it has advantages of proper dissolving capacity to rock with dissolving ratio of 38.9%, little corrosion to the pipeline of equipment with corrosion rate of 2.9 g/m2·h-1, low interfacial tension, anti-acid-sludge, and ability to stabilize ferric ion. The plugging in deep formations can be removed with low damage to rock skeleton, which the damage rate is less than 20%. It has been applied in 19 wells with success ratio of 100% and long term of validity, average validity is more than 200 days. The oil production and water injection have been increased obviously. Key words: Acidization; Second damage; Complex plug removal system; Deep penetration; Rock skeleton |
| Idioma: | Inglés |
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