断陷盆地碳酸盐岩热储勘查及研究：以鱼台凹陷为例

孟甲; 秦鹏; 史启朋; 谭现锋; 张茜

doi:10.19509/j.cnki.dzkq.2022.0035

断陷盆地碳酸盐岩热储勘查及研究：以鱼台凹陷为例

doi: 10.19509/j.cnki.dzkq.2022.0035

孟甲^1,,
秦鹏²,
史启朋^{1, 3, ,},
谭现锋¹,
张茜¹

1.
山东省鲁南地质工程勘察院(山东省地质矿产勘查开发局第二地质大队), 山东济宁 272100
2.
山东省国土空间生态修复中心, 济南 250014
3.
山东省地热清洁能源勘查开发工程研究中心, 山东济宁 272100

基金项目:

中央引导地方科技发展资金项目"碳酸盐岩地热资源成因理论及找矿模式" YDZX20203700002937

山东省地质勘查项目"山东省鱼台凹陷地热资源调查评价" 鲁勘字〔2019〕9号

详细信息

作者简介:
孟甲(1990-), 男, 工程师, 主要从事水工环地质方面的研究工作。E-mail: mengzhenchuan@foxmail.com

通讯作者:
史启朋(1979-), 男, 正高级工程师, 主要从事水工环地质方面的研究工作。E-mail: shiqipenging@163.com

中图分类号: P314
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- 文章访问数: 833
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- 被引次数: 0
出版历程
- 收稿日期: 2021-09-29
- 网络出版日期: 2022-09-07

Exploration and study on carbonate thermal reservoirs in fault basins: A case from Yutai Sag

Meng Jia^1
,,
Qin Peng²,
Shi Qipeng^{1, 3
, ,},
Tan Xianfeng¹,
Zhang Xi¹

1.
Shandong Provincial Lunan Geology and Exploration Institute (Shandong Provincial Bureau of Geology and Mineral Resources No.2 Geological Brigade), Jining Shandong 272100, China
2.
Shandong Land and Space Ecological Restoration Center, Jinan 250014, China
3.
Shandong Geothermal Clean Energy Exploration and Development Engineering Research Center, Jining Shandong 272100, China

摘要

摘要:
鱼台凹陷是一个中生代同沉积断陷盆地, 其内部构造纵横, 深部普遍发育奥陶系碳酸盐岩, 具备地热开发前景。为研究断陷盆地内碳酸盐岩热储特征, 评价其资源潜力, 在鱼台凹陷施工一眼2 309.31 m深钻孔, 通过综合测井、产能测试、水化学分析、气体成分分析、地热水¹⁴C年龄测定等手段, 分析了盆地内地热流体的来源及补给、热源储集、离子运移等条件。结果显示, 地热井温曲线的增温异常与裂隙发育断位置一致, 指示了地热水来源方向; 地热水Cl^-、Na⁺含量较高, 其离子组分形成原因与岩盐溶解有关; 鱼台凹陷东南部断裂交会处附近地热水表观年龄43.5 ka BP, 校正年龄10.752 ka BP, 时间在第四纪更新世晚期至全新世早期。研究认为, 鱼台凹陷存在较为活跃或年轻的地质构造, 是热储的热源之一, 区内奥陶系热储可采地热资源量约为2.12×10⁹ GJ, 合标准煤7.27×10⁷ t, 资源潜力较大, 开发利用前景良好。
- 地热 /
- 断陷盆地 /
- 碳酸盐岩 /
- 水化学 /
- 气体成分 /
- 鱼台凹陷
Abstract:
Yutai Sag is a Mesozoic synsedimentary fault basin. It is characterized by much fault intersection and massive Ordovician carbonate rock in the deep, which indicates a good prospect of geothermal development. To study the characteristics of carbonate thermal reservoirs in this fault basin and evaluate its geothermal resource potential, a hole with a depth of 2 309.31 m was drilled in Yutai Sag. Through comprehensive logging, productivity testing, hydrochemical analysis, gas composition analysis, and geothermal water ¹⁴C age determination, the sources and supply of thermal fluid, heat source storage, and ion migration in the interior of the basin are analyzed.The result shows that the temperature anomaly presented in the geothermal well temperature curve and the fault position characterized by many fractures are consistent, indicating the source direction of geothermal water.The geothermal water with high content of Cl^- and Na^- is related to halite dissolution. The apparent age of geothermal water is 43.5 ka BP near the confluence of faults in the southeastern Yutai Sag, and the corrected age is 10.752 ka BP which is from the late Quaternary Pleistocene to the early Holocene.The study shows that there are relatively active or young geological structures in Yutai Sag, which are one of the thermal sources of thermal reservoirs. The recoverable geothermal resources of the Ordovician thermal reservoir in the area are approximately 2.12×10⁹ GJ, equivalent to 7.27×10⁷ t of standard coal, implying great resource potential and good prospects for development and utilization.
- geothermal /
- fault basin /
- carbonate rock /
- hydrochemistry /
- gas composition /
- Yutai Sag

HTML全文

图 1 鱼台凹陷构造图

Ar.前寒武系变质基底; Pz.古生代海相-海陆交互相沉积岩系; J₂-K₁.中生代陆相碎屑沉积岩系; E.古近系河湖相沉积岩系; 1.地热钻孔; 2.断裂构造; 3.平行不整合界线；4.角度不整合界线

Figure 1. Tectonic geological map of Yutai Sag

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图 2 视电阻率成果推断图

Figure 2. Interpretive map of apparent resistivity results

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图 3 YTR1井抽水等效降深(热水头)、流量曲线

Figure 3. Equivalent drawdown (hydrothermal head) and flow rate curve of pumping in Well YTR1

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图 4 YTR1井测温曲线

Figure 4. Temperature measurement curve of Well YTR1

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图 5 YTR1井及周边地下水Schoeller图

Figure 5. Groundwater Schoeller diagram in Well YTR1 and its surroundings

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图 6 YTR1井及周边地下水Gibbs、Piper图

Figure 6. Groundwater Gibbs and Piper diagrams in Well YTR1 and its surroundings

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表 1 研究区地层发育及其地热属性

Table 1. Stratigraphic characteristics and geothermal properties in the study area

年代地层单位			厚度/m	岩性特征	地热属性
界	系	组	厚度/m	岩性特征	地热属性
新生界	第四系	未分(Q)	60~150	黏土、砂质黏土、黏土质砂及砂砾层	盖层
	新近系	明化镇组(N₂m)	260	泥岩为主，夹泥质粉砂岩、细砂岩、砂砾岩，局部含石膏、钙质胶结层
	新近系	馆陶组(N₁g)	400	上部为页岩，下部以玄武岩为主，局部夹浅灰色泥灰岩及粉砂岩
	古近系	常路组(K₂E₁$\widehat c$)	310	上部泥质粉砂岩、砂岩；中部位泥质粉砂岩、细砂岩与泥岩互层；下部为泥岩、细砂岩、泥质粉砂岩
中生界	白垩系	卞桥组(K₂E₁b)	470	灰岩、黏土岩、岩盐、膏岩
		八亩地组(K₁b)	>200	上部安山质火山碎屑岩，下部玄武质岩
		杨家庄组(K₁y)	≤1 200	下部细粒砂岩夹砾岩透镜体，局部夹泥岩薄层；上部较多粉细砂岩；中部粉砂岩及粉、细砂岩互层
		林寺山组(K₁l)	180	中细粒砂岩及砾岩
古生界	侏罗系	三台(J₃K₁s)	220	上部粗砂岩，下部砂砾岩
	二叠系	石盒子群(P_2-3$\widehat s$)	133	泥岩为主
		山西组(P_1-2$\widehat s$)	85	砂岩、泥岩、粉砂岩、煤
		太原组(C₂P₁t)	200	砂岩、泥岩、粉砂岩、煤
	石炭系	本溪组(C₂b)	50	黏土岩
	石炭系	湖田段(C₂bh)	15	铁铝质黏土岩
	奥陶系	八陡组(O_2-3b)		灰岩、白云质灰岩	储层
		阁庄组(O₂g)		白云岩
		五阳山组(O₂w)		云斑灰岩
		土峪组(O₂t)	550~900	白云岩
		北庵庄组(O₂b)		灰岩、白云质灰岩
		东黄山组(O₂d)		白云岩
注：上表地层岩性参考文献[11]

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表 2 YTR1井奥陶系主要出水层测井解释成果

Table 2. Logging interpretation result of the mainwater production interval in Ordovician in Well YTR1

井段/m	层厚/m	电阻率/(Ω·m)	声波时差/(μs·m^-1)	孔隙度/%	渗透率/10^-3 μm²	泥质φ_B/%	解释结论
2 117.8~2 123.8	6.0	215.1	215.8	12.4	125.33	18.4	二类裂缝层
2 161.5~2 190.4	28.9	85.3	198.8	9	8.54	5.4	三类裂缝层

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表 3 YTR1井参数

Table 3. Parameters of Well YTR1

抽水层位	层段深度/m	层位厚度/m	孔隙度/%	含水层厚度/m	出水层段半径/m	静水位埋深/m
马家沟群上部	2 100.74~2 309.31	208.57	9.58	34.9	0.076	90.372(热水头)

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表 4 YTR1井抽水试验结果参数

Table 4. Pumping test result parameters of Well YTR1

落程	降深/m	出水量/(m³·d^-1)	井口水温/℃	含水层厚度/m	渗透系数/(m·d^-1)	影响半径/m
S1	147.63	340.80	62.00		0.091	444.23
S2	267.63	552.00	68.50	34.90	0.087	789.54
S3	265.22	456.00	68.00		0.080	646.43

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表 5 研究区YTR1井奥陶系水样脱气组分

Table 5. Degassing components of Ordovician water samples from Well YTR1 in the study area

成分	H₂	He	CH₄	CO	N₂	C₂H₆	O₂	Ar	CO₂
φ_B/%	1.78	0.27	8.53	0.002	69.04	0.1	9.12	0.83	10.32

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