CAJ | 학술논문

水平井技术是开采底水油藏的一项重要技术,针对水平井进行了水淹模式和水淹动态的试验研究,结果表明:三维模拟试验系统能真实、直观地描述底水油藏水平井在不同生产压差和含水率条件下水锥的形态和上升速度,能反映出水平井的水淹动态和模式;"中部见水-两边扩展-全井水淹-翼部抬升"是底水油藏水平井的水淹模式,并且大生产压差下的水脊较陡,水脊的指进现象明显;在含水率较高的开发后期油水界面上移.生产压差变大,无水采油期缩短,无水采油量减少,但最终采收率接近.
수평정기술시개채저수유장적일항중요기술,침대수평정진행료수엄모식화수엄동태적시험연구,결과표명:삼유모의시험계통능진실、직관지묘술저수유장수평정재불동생산압차화함수솔조건하수추적형태화상승속도,능반영출수평정적수엄동태화모식;"중부견수-량변확전-전정수엄-익부태승"시저수유장수평정적수엄모식,병차대생산압차하적수척교두,수척적지진현상명현;재함수솔교고적개발후기유수계면상이.생산압차변대,무수채유기축단,무수채유량감소,단최종채수솔접근.
The technique of horizontal wells was one of the important techniques for the development of reservoirs with bottom water. In combination with horizontal wells, experimental studies were conducted on water-out patterns and water-out dynamics. The result indicates that the three-dimensional simulation experiment system can clearly and accurately describe water coning shape and its increase velocity of reservoirs under the conditions of different production pressure differences and water cuts and reflect the water-out dynamics and its pattern. The water-out pattern of reser voirs with bottom water is that water producing in- the middle-expansion on both sides, water-out in the whole well, rising in the flank; water crest is steep under high production pressure difference with obvious fingering, oil-water interface moves upward at the late stage of development, production pressure difference is highly changed with short period of non-water production and small amount of oil. but the ultimate oil recovery ration is approximate.