An integrated knowledge of the sedimentological data, petrophysical and geomechanical characteristics significantly enhances the understanding of the reservoir properties, leading to a reliable subsurface modeling. This work presents a comprehensive reservoir assessment of the prolific Triassic Argilo-Gréseux Inférieur (TAGI) sandstones of the Hassi Berkine South (HBNS) field, Southeastern Algeria. The Lower Triassic producer appears to be laid down on the Late Devonian erosional surface (Hercynian unconformity) in a fluvial depositional system. Based on the sedimentary structures, a fluvial depositional environment is deciphered from cores. Lateral and vertical disposition of the channel and floodplain deposits from regional well log correlation infers a shift of depositional regime from braided in the SW to meandering in the NE direction. Two distinct reservoir rock types (RRT) are interpreted from core-based petrophysical assessment. RRT1 is composed of macro-megaporous medium to very coarse grained amalgamated channel sandstones and yields the best reservoir attributes, while the mesoporous fine grained RRT2 translates to impervious to poor reservoir quality. RRT1 channel sands are found to be laterally continuous, while the fine grained crevasse splay sands corresponding to RRT2 are laterally discontinuous, thus making them difficult to correlate field wide. Rock-mechanical property-based in-situ stress estimates suggested a normal to strike-slip transitional (S_v ≥ S_HMax > S_hmin) stress state in the TAGI Formation. Direct measurements indicate that the TAGI reservoir had an initial pore pressure gradient of 11.08 MPa/km and is presently depleted by 2.1–2.5 MPa. A stable depletion stress path value of 0.57 is inferred considering a pore pressure-minimum horizontal stress coupling. At the present-day depletion rate, normal faulting is unlikely to have happened at the TAGI reservoir level and it can be depleted by another 25 MPa before inducing any production-induced reservoir instabilities.

对沉积学数据，岩石物理和地质力学特征的综合了解大大增强了对储层性质的了解，从而导致了可靠的地下建模。这项工作对阿尔及利亚东南部Hassi Berkine South（HBNS）油田多产的三叠纪Argilo-GréseuxInférieur（TAGI）砂岩进行了综合储层评估。下三叠纪产层似乎沉积在河流沉积体系中的晚泥盆纪侵蚀面（海西不整合面）上。基于沉积结构，从岩心中解译出河流沉积环境。区域测井相关性对河床和洪泛区沉积物的横向和垂直布置，导致沉积方式从西南向辫状向东北向曲折转变。从基于岩心的岩石物理评估中可以解释两种不同的储集岩类型（RRT）。RRT1由大孔大介质到非常粗粒的混合河道砂岩组成，并具有最佳的储层属性，而中孔细粒RRT2则转化为不可渗透的不良储层质量。发现RRT1通道砂在横向上是连续的，而与RRT2相对应的细粒裂隙张开砂在横向上是不连续的，因此使它们很难与整个田间联系起来。基于岩石力学特性的原位应力估计表明走滑过渡带法向（S RRT1由大孔大介质到非常粗粒的混合河道砂岩组成，并具有最佳的储层属性，而中孔细粒RRT2则转化为不可渗透的不良储层质量。发现RRT1通道砂在横向上是连续的，而与RRT2相对应的细粒裂隙张开砂在横向上是不连续的，因此使它们很难与整个田间联系起来。基于岩石力学特性的原位应力估算值表明走滑过渡带法向（S RRT1由大孔大介质到非常粗粒的混合河道砂岩组成，并具有最佳的储层属性，而中孔细粒RRT2则转化为不可渗透的不良储层质量。发现RRT1通道砂在横向上是连续的，而与RRT2相对应的细粒裂隙张开砂在横向上是不连续的，因此使它们很难与整个田间联系起来。基于岩石力学特性的原位应力估算值表明走滑过渡带法向（S_v  ≥小号_HMAX  >取值_HMIN）应力在田仪形成状态。直接测量表明，TAGI储层的初始孔隙压力梯度为11.08 MPa / km，目前消耗了2.1–2.5 MPa。考虑到孔隙压力-最小水平应力耦合，推断出稳定的耗尽应力路径值为0.57。以目前的枯竭率，在TAGI油藏水平上不太可能发生正常断层，在引起任何生产引起的油藏不稳定性之前，它可以再消耗25 MPa。