CAJ | 학술논문

奥里诺科重油带位于东委内瑞拉盆地南部斜坡带，总面积55000 km2。重油带油藏埋深350～1200 m，储层主要为渐新统和中新统未固结砂岩，平均孔隙度33．4％，平均渗透率4760×10－3μm2；油层温度40～55℃；油藏压力为常压；超重油重度为7．5°～9° API，原地黏度介于1000～6000 cp；油藏有效厚度为6～120 m左右；探明原始地质储量11220×108 bbl，可采储量2600×108 bbl。重油带共有5个开发区块，日产油量约72×104 bbl，已形成一套经济可行的开发技术系列。重油带开发区块动用的可采储量仅占重油带可采储量的3％左右，尚具有巨大的勘探开发潜力。
오리낙과중유대위우동위내서랍분지남부사파대，총면적55000 km2。중유대유장매심350～1200 m，저층주요위점신통화중신통미고결사암，평균공극도33．4％，평균삼투솔4760×10－3μm2；유층온도40～55℃；유장압력위상압；초중유중도위7．5°～9° API，원지점도개우1000～6000 cp；유장유효후도위6～120 m좌우；탐명원시지질저량11220×108 bbl，가채저량2600×108 bbl。중유대공유5개개발구괴，일산유량약72×104 bbl，이형성일투경제가행적개발기술계렬。중유대개발구괴동용적가채저량부점중유대가채저량적3％좌우，상구유거대적감탐개발잠력。
The Orinoco heavy oil belt is on the southern slope of the Eastern Venezuela Basin, with an area of 55 000 km2 . The heavy oil reservoirs were buried 350-1 200 m deep. The unconsolidated sandstones in Oligocene and Miocene worked as the main reservoirs, with the average porosity and permeability of 33.4% and 4 760×10-3 μm2, respectively. Reservoir temperature is 40-55℃. Reservoir pressure coefficient is about 1. Super heavy oil API is 7.5 °-9 °. Situ viscosity is 1 000- 6 000 cP . Reservoir effective thickness is 6-120 m. The original proven geologic reserve is 11 220×108 bbl, and the recoverable reserve is 2 600×108 bbl. There are five heavy oil developing blocks with daily oil production of about 72 ×104 bbl. A set of economic and feasible developing technology series has been formed. The recoverablereserve of the developing blocks is about 3%of the total recoverable reserves of heavy oil belt, showing great exploration potentials.