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文北－户部寨气田是东濮凹陷继文留气田后新发现的煤成气田。其构造背景为凹陷内二级断层形成的中央地垒；盖层为下第三系沙河街组沙三~４亚段盐岩，厚４００～５００ｍ，分布范围数百平方公里；气源岩为石炭－二叠系焕岩，煤层及碳质泥岩累厚逾百米，煤化程度为焦煤阶段，气源条件较好；储层为沙河街组非常规致密砂岩和中生界的孔隙－裂缝型致密砂岩，前者为深湖－半深湖相夹湖底扇、滑塌浊积的灰色粉、细砂岩和滨湖相的紫红、褐色粉砂岩，厚２５０～１３０ｍ，岩心孔隙度８％～１０％，渗透率小于０．５×１０~（－３）μｍ~２，后者为河流相紫红色泥岩与粉、细砂岩，厚约３００ｍ，全区分布较稳定。由于该气田储层的致密特征，故在开发中采取了一系列保护和改造含气层的措施，最主要的是应用了压裂改造气层的技术。文北—户部寨气田的发现，为该区勘探和开发低渗致密砂岩气藏提供了成功的经验，扩大了该区的含气面积，发现了中生界新的含气层位，增强了开采东濮凹陷深层致密砂岩天然气的信心。
Wenbei-Hububuzhai gas field is a newly discovered coal-formed gas field in the Dongpu Depression following Wenweili Gas Field. The tectonic setting is the central barrier formed by the second-level fault in the depression. The caprock is salt rock of the Third-4th Member of Shahejie Formation in the Lower Tertiary, with a thickness of 400-500m and a distribution area of several hundred square kilometers. The source rock is Carboniferous-Permian hwanite, coal seam and carbonaceous mudstone accumulate over a hundred meters, the degree of coalification is coking coal stage, and gas source conditions are good. The reservoir is a pore-fissure type of unconventional tight sandstone and Mesozoic in Shahejie Formation Tight sandstone, the former is the deep lake - semi-deep lacustrine trap lake bottom fan, slump turbidity of the gray powder, fine sandstone and lake facies purple, brown siltstone, thickness 250 ~ 130m, the core porosity of 8% to 10% The permeability is less than 0.5 × 10 ~ (-3) μm ~ 2. The latter is purple mauve and pink siltstone of fluvial facies with a thickness of about 300m. The distribution in the whole area is relatively stable. Due to the dense characteristics of the gas reservoirs, a series of measures to protect and reform gas-bearing formations have been adopted in the development. The most important one is the application of technologies for fracturing and reforming gas reservoirs. The discovery of Wenbei-Hububuzhai gas field has provided successful experiences in exploration and development of low-permeability tight sandstone gas reservoirs in this area, expanded the gas-bearing area in this area, discovered new Mesozoic gas-bearing beds and enhanced Confidence in mining deep tight sandstone natural gas in Dongpu Depression.