| 1. | Fracture will form when the formation compression increase to the value of making rock break . it will release pressure 地层压力的增加达到使岩石破裂的值时,岩石破裂产生裂缝,会使压力释放。 |
| 2. | Forming of hydrocarbon and fission of oil which increase the bulk of fluid will lead the increase of formation compression in the stratum enclosed well 生烃和原油裂解使流体体积增大,但只有在地层的封闭性较好时,才会导致地层压力增加。 |
| 3. | 2 . the variation of formation compression during subsidence during the subsidence there are hydrostatic pressure and abnormal pressure zones in vertical 2盆地沉降过程中地层压力的变化盆地沉降过程中,地层压力在垂向上大致分为静水压力带和异常超压带。 |
| 4. | Under the condition of uniformity degradation the formation compression will have a whole fall on account of the reduce of overburden , the expanding of fluid hi the pore and rocks and the decrease of density 在均匀剥蚀情况下,上覆岩层厚度减小,岩石和孔隙流体膨胀,密度减小,地层压力会整体降低。 |
| 5. | The conclusions are following : 1 . the basic factors influencing formation compression are thickness and density of overburden ( including fluid ) and behavior to enclose fluid of the formation 主要取得了以下认识: 1影响地层压力的基本因素是该岩层的上覆岩层(含流体)的厚度、密度以及该岩层封闭流体的特性。 |
| 6. | 3 . the variation of formation compression during uplift and degradation the uplift and denudation of basin have a greatly influence to the formation compression formed previously . the fashion of influence is related to the uniformity extent of degradation of the earth ' s surface 3盆地抬升剥蚀过程中地层压力的变化盆地的抬升剥蚀对前期形成的地层压力有重要的影响,影响的方式与地表剥蚀的均匀程度有关。 |
| 7. | The dissertation researches evolvement and character of formation compression by model test and geology analyzing , based on analyzing transformation of porosity , permeability , compressibility and density of sandstone and mudstone and fracture during subsidence and uplift 本文以模拟试验和地质分析为主要研究手段,在分析沉降、抬升过程砂泥岩孔隙度、渗透率、压缩性、密度及裂缝变化的基础上,研究地层压力的演化及特征。 |
| 8. | It is related to lithology , lithology association porosity , permeability , compressibility of rock , enclosing and fracture etc . therefore , it is important for the forecast of formation compression to consider fully the variation of each geology factor 实际上,地层压力的影响因素很复杂,与岩性及其组合、岩石的孔隙度及渗透率、压缩性、岩层的封闭性、裂缝等有关。因此,在进行地层压力预测时要充分考虑各种地质因素的变化。 |
| 9. | The forecast method of formation compression the principle of forecast method is based on increasing of formation compression along with burial depth . the used parameters include velocity , density , porosity , and fluid content etc . in fact , the factor influence formation compression is very complex 4地层压力预测方法地层压力预测方法的基本原理建立在地层压力随埋深增加而增加的基础上,所用的参数主要有岩层速度、密度、孔隙度、流体含量或与之有关的参数等。 |