近日，自然资源部中国地质调查局发布“中国地质调查局2025年度地质调查十大进展”，由中国地质调查局联合湖北省地质局等多家单位协同攻关的“鄂西地区二叠系大隆组和栖霞组实现工业气流突破”成果入选。

Recently, the Ministry of Natural Resources and the China Geological Survey released the "Top Ten Geological Survey Achievements of the China Geological Survey in 2025". The achievement "Industrial gas flow breakthrough in the Dalong Formation and Qixia Formation of the Western Hubei Region was achieved through collaborative research by the China Geological Survey and several other units" was selected.

其中鄂西二叠系大隆组成功获得日产5.06万立方米的工业气流，意味着鄂西二叠系大隆组页岩气已具备工业开采价值。“这一发现开创了大隆组勘探新区域，实现了鄂西地区非常规油气勘探重大突破，将为同类型页岩气的勘探开发带来无限可能。”湖北省地质局第七地质大队队长郑琪介绍。

Among them, the Dalong Formation of the Western Hubei Permian Series has successfully achieved an industrial gas flow rate of 50,600 cubic meters per day, indicating that the shale gas in the Dalong Formation of the Western Hubei Permian Series has reached the level of industrial exploitation value. "This discovery has opened up new exploration areas for the Dalong Formation and achieved a major breakthrough in unconventional oil and gas exploration in the Western Hubei region. It will bring unlimited possibilities for the exploration and development of similar shale gas," said Zheng Qi, the team leader of the Seventh Geology Team of the Hubei Geological Bureau.

距离开发利用仅“一步之遥”

It is "just one step away" from being put into use and development.

页岩气就是埋藏在地下岩层中的天然气，与大规模天然气开采不同，它赋存在微纳米孔隙的黑色富有机质呈页理状的岩石中，要通过非常规技术手段如水平井压裂，将地下岩层内的石头压出一些裂缝，气才能出来。相比普通的天然气，页岩气是被认为是非常规气。

Shale gas is natural gas that is buried in underground rock layers. Unlike large-scale natural gas extraction, it is stored in black rocks with organic matter-rich micro-nano pores in a platy form. To release the gas, unconventional technical methods such as horizontal well fracturing are used to create some cracks in the underground rock layers, allowing the gas to escape. Compared to ordinary natural gas, shale gas is considered to be unconventional gas.

鄂西地区二叠系大隆组实现工业气流突破，意味着鄂西恩施二叠系大隆组页岩层系的页岩气已具备工业开采价值，距离真正的开发利用更进一步了。

The industrial gas flow breakthrough in the Da Long Formation of the Permian System in the western Hubei region indicates that the shale gas in the shale layer system of the Da Long Formation in Enshi, western Hubei, has reached the level of industrial exploitation value, bringing us one step closer to the actual development and utilization.

此前，鄂恩页2HF井水平井钻探及压裂试气一体化工程的成功实施是迈出这一步的关键一环。该工程由省地质局地质七大队实施，是该局首个、国内地勘单位实施的为数不多的“钻—压—试”一体化页岩气工程。

Previously, the successful implementation of the integrated project for horizontal well drilling and fracturing test gas production in the Eunpage 2HF well was a crucial step in this process. This project was carried out by the Geological Team 7 of the Provincial Geological Bureau and was the first of its kind in the province and one of the few such "drill - fracture - test" integrated shale gas projects implemented by domestic geological exploration units.

“水平井钻探和压裂试气都是一个单位负责，这在全国的地勘单位中不多见。”郑琪介绍，地勘单位一般只负责页岩气的勘查，就是通过地表调查、人工地震等技术先知道下面有没有页岩气，页岩气有多少，并通过钻井取出岩芯，检测分析出含气量。压裂则是该队涉足的全新领域即页岩气的开采，它利用水力或其他方式使页岩气储层产生裂缝，从而释放出更多的页岩气，以此确定页岩气的每日产量。

"Both horizontal well drilling and pressure fracturing for gas testing are handled by a single unit, which is quite uncommon among geological exploration units across the country," Zheng Qi explained. Geological exploration units usually only undertake the exploration of shale gas, that is, through surface surveys, artificial earthquakes and other techniques, they first find out whether there is shale gas beneath the ground and how much it is, and then drill wells to extract rock cores and analyze the gas content. Fracturing is a completely new field that this team has ventured into, that is, the extraction of shale gas. It uses hydraulic pressure or other methods to create fractures in the shale gas reservoir, thereby releasing more shale gas and determining the daily output of shale gas.

该井最后成功获得日产5.06万立方米的工业气流，按三口之家日均用气0.5立方米估算，该井日产量可满足约10万户家庭日常用气需求。

The well finally achieved an industrial gas flow rate of 50,600 cubic meters per day. Based on the estimation that a family of three uses an average of 0.5 cubic meters of gas per day, this daily output can meet the daily gas consumption needs of approximately 100,000 households.

除了获得稳定的工业气流外，此次找矿成果还实现了页岩气勘查区域的新突破。据介绍，我国的页岩气资源非常丰富，分布面积广，但由于地质构造复杂，目前进行商业性、大规模页岩气勘探开发的区域主要集中在四川盆地或四川盆地边缘，此次在鄂西的页岩气找矿成果，开拓了非常规气新区域，实现了页岩气勘查从四川盆地向鄂西地区的有效拓展。

In addition to obtaining a stable industrial gas flow, this mining achievement has also achieved a new breakthrough in the exploration area of shale gas. It is reported that China has abundant shale gas resources and they are widely distributed. However, due to the complex geological structure, the areas currently conducting commercial and large-scale shale gas exploration and development are mainly concentrated in the Sichuan Basin or its periphery. The shale gas exploration results in western Hubei this time have opened up a new unconventional gas area and effectively expanded the exploration of shale gas from the Sichuan Basin to the western Hubei region.

过年时仍蹲守现场录数据

Even during the New Year, they continued to stay at the scene to record the data.

“页岩气水平井的钻探和压裂试气工程是我队首次涉足的领域。”郑琪表示，此次施工点属页岩气新层系，没有可以借鉴的经验。除此之外，施工过程中还面临着优质页岩层仅有10米厚、钻遇页岩气的概率不小于90%等难题，如同在地下绣花一样。

"The drilling and fracturing test gas exploration project for shale gas wells is the first area that our team has ventured into," said Zheng Qi. The construction site this time belongs to a new layer of shale gas, and there are no comparable experiences to draw upon. Besides, during the construction process, they also faced difficulties such as the quality shale layer being only 10 meters thick and the probability of encountering shale gas during drilling being no less than 90%, which is like embroidering underground.

面对巨大压力和空前挑战，项目部不畏艰险，迎难而上。

Facing huge pressure and unprecedented challenges, the project team did not shy away from difficulties but instead bravely took on the challenges head-on.

项目开始不久，该队在钻井过程中发现了严重的泥浆漏失。如果不堵上，1小时就要损失14万元，极大增加了项目成本和施工风险，也无法进行后续的测井工作，无法获取地质及工程技术资料，更谈不上压裂试气。

Shortly after the project began, the team discovered severe mud leakage during the drilling process. If not stopped, a loss of 140,000 yuan would occur every hour, significantly increasing the project cost and construction risks. It would also prevent the subsequent logging work, making it impossible to obtain geological and engineering technical data, let alone conduct fracturing tests and gas production trials.

“整个项目部像是热锅上的蚂蚁，24小时守在现场，在井口旁录取压力数据。在尝试多次分段循环堵漏以后，历经10天左右，才显著降低漏速。最后，通过调研国内外的施工经验，决定采用直推式测井，最终完成了测井任务，获取了各项测井资料。”该队探矿分队队长宋永朋回忆。

The entire project team was like ants on a hot pan, staying at the site 24 hours a day and taking pressure data at the wellhead. After several attempts at segmental loop leak sealing, it took about 10 days before the leakage rate was significantly reduced. Finally, by studying construction experiences from both domestic and international sources, they decided to adopt the direct-push logging method. Eventually, the logging task was completed and all logging data were obtained. This was recalled by Song Yongpeng, the team leader of the exploration section.

施工的另一难题，便是页岩层的压力系数较低，给压裂试气带来了很大难度。据介绍，该页岩层属于常压浅层页岩气，地层压力低，无法像以往的页岩层那样，压裂后页岩气可以自行排出。“加上钻井轨迹向上倾斜，容易堆积沙床和磨损设备，采用射流泵，仍然无法达到试气的要求。”宋永朋介绍，前前后后尝试了半年，导致项目周期滞后，进度压力很大。

Another challenge in the construction process is the low pressure coefficient of the shale layer, which poses significant difficulties for the fracturing and gas testing. It is stated that this shale layer is a low-pressure shallow shale gas layer with low formation pressure. Unlike previous shale layers, the shale gas in this layer cannot be naturally discharged after fracturing. "In addition, the drilling trajectory slopes upward, making it prone to sand accumulation and equipment wear. Even with the use of jet pumps, it still fails to meet the requirements for gas testing." Song Yongpeng explained that after trying for half a year, the project cycle was delayed and the pressure to advance the schedule was very high.

宋永朋回忆，2025年春节，大家都蹲守在现场，录取排液和井口压力数据。在没有现成经验可借鉴的情况下，技术人员反复调研贵州和重庆的页岩气试气经验，决定引入“电潜泵+气举+泡排复合管串”常压页岩气高效返排技术，实现电潜泵、气举、泡排三种排采工艺无缝切换，搭配智能化实时监测系统，动态调控井口压力、产液、产气等关键参数，最终解决了复杂构造区常压页岩气地层能量不足、排液困难、产气不稳定的技术难题。

Song Yongpeng recalled that during the Spring Festival of 2025, everyone was stationed at the site, collecting liquid discharge and wellhead pressure data. In the absence of any existing experience to draw upon, the technicians repeatedly studied the shale gas trial production experiences in Guizhou and Chongqing, and decided to introduce the "electric submersible pump + gas lift + foam drainage combined pipe string" constant pressure shale gas efficient return flow technology. This enabled seamless switching of the three production processes of electric submersible pump, gas lift, and foam drainage, along with an intelligent real-time monitoring system, to dynamically adjust key parameters such as wellhead pressure, liquid production, and gas production. Eventually, they solved the technical problems of insufficient formation energy, difficult liquid discharge, and unstable gas production in the complex structural area of constant pressure shale gas.

最后，该工程在地下1800米处打到页岩层，并通过3232米的水平井和压裂井成功获得稳定的页岩气，优质页岩钻遇率达97.2%，远高于行业规范及标准。试气结果显示，稳定日产气量达5.06万立方米，且为优质工业气流，储层内的页岩气品质达到国内Ⅰ类优质页岩气层标准。

Finally, the project reached the shale layer at a depth of 1800 meters underground, and successfully obtained stable shale gas through a 3232-meter horizontal well and a fracturing well. The rate of encountering high-quality shale was 97.2%, which was much higher than the industry norms and standards. The test results showed that the stable daily gas production reached 50,600 cubic meters, and it was a high-quality industrial gas flow. The quality of the shale gas in the reservoir reached the domestic Class I standard for high-quality shale gas layers.

打响鄂西页岩气勘探开发“第一枪”

Set off the "first shot" in the exploration and development of shale gas in western Hubei region

目前进行商业性、大规模页岩气勘探开发主要集中在四川盆地或四川盆地边缘，包括恩施部分正在开发的页岩气井也在该区域内，属于四川盆地边缘。“鄂恩页2HF井是鄂西地区获得稳定工业气流的第一口井，打响了鄂西地区页岩气后续勘探开发的‘第一枪’。”郑琪表示，此次省地质局在页岩气勘探开发技术上获取的宝贵经验，可为下一步同类型页岩气层的钻探和压裂试气提供借鉴。

At present, commercial and large-scale shale gas exploration and development is mainly concentrated in the Sichuan Basin or its periphery. Even the shale gas wells being developed in Enshi are within this area, which belongs to the periphery of the Sichuan Basin. "The Eru Enhai 2HF well is the first well in the western Hubei region to obtain stable industrial gas flow, firing the first shot for the subsequent exploration and development of shale gas in the western Hubei area," said Zheng Qi. The valuable experience obtained by the provincial geological bureau in shale gas exploration and development technology this time can provide reference for the drilling and fracturing gas testing of similar shale gas layers in the future.

中国地质调查局武汉地质调查中心和湖北省地质局自2013年开始在鄂西开展页岩气工作，实现了多个层系页岩气的突破。目前，鄂西地区二叠系两套层系在鄂西地区分布面积达到上万平方公里。鄂西地区二叠系两套层系工业气流实现突破，对经济社会发展和我国能源安全具有重要意义。

The Wuhan Geological Survey Center of the China Geological Survey and the Hubei Provincial Geological Bureau have been conducting shale gas exploration in western Hubei since 2013, achieving breakthroughs in shale gas in multiple formations. Currently, the distribution area of the two formations of the Permian System in western Hubei reaches over 10,000 square kilometers. The industrial gas flow of the two formations of the Permian System in western Hubei has been achieved, which is of great significance for economic and social development and energy security of our country.

目前，该队正在加速推进鄂西页岩气的系列重点项目。该队依托鄂恩页2HF井重大勘探发现，计划在恩施新增部署3至4口页岩气参数井，圈定规模化整装页岩气有利靶区，夯实恩施页岩气重点突破区建设基础。

At present, this team is accelerating the implementation of a series of key projects related to shale gas in western Hubei. Based on the significant exploration discovery made at the Ouyen Shale Gas 2HF well, the team plans to add 3 to 4 shale gas parameter wells in Enshi, delineate large-scale and integrated shale gas favorable target areas, and lay a solid foundation for the construction of the key breakthrough area of shale gas in Enshi.

在此基础上，省地质局将加强与武汉地调中心、省自然资源厅、恩施州等政府单位和相关部门的协同，加快勘查成果转化落地，推进页岩气矿权竞争性出让、区块规划布设等工作，推动地质勘查成果快速转化为可开发、可利用的实物资源储量。

Based on this, the Provincial Geological Bureau will strengthen collaboration with the Wuhan Geological Survey Center, the Provincial Department of Natural Resources, the Enshi Prefecture and other government units and relevant departments, accelerate the transformation and implementation of exploration results, promote the competitive allocation of shale gas mining rights, the planning and layout of blocks, and other work, and promote the rapid conversion of geological exploration results into exploitable and usable physical resource reserves.