地热资源开发潜力及应用前景评价——以开封祥符区为例

doi:10.13809/j.cnki.cn32-1825/te.2024.06.003

Abstract

Abstract:

With the growing global demand for clean energy, geothermal resources as a renewable energy source have attracted widespread attention. This study evaluated the geothermal resource development potential and application prospects in the Xiangfu District of Kaifeng City. The results showed that the vertical temperature field of the thermal reservoir in the Xiangfu District could be divided into varying temperature zones, constant temperature zones, and increasing temperature zones, with depth significantly influencing the temperature distribution. The geothermal gradient increased with depth above 500 m and gradually decreased below 500 m. Chemical analysis of geothermal fluids showed significant differences in the water chemistry types between thermal reservoirs at different depths, with no significant hydraulic connection between the reservoirs. Based on the maximum allowable depth reduction method and the extracted water volume method, the total exploitable geothermal fluid without reinjection was estimated to be 9,390×10⁴ m³. Under complete reinjection conditions, the total exploitable geothermal fluid was estimated to be 360.7×10⁸ m³, indicating substantial development potential. These research findings provide a scientific basis and guidance for the efficient development and utilization of geothermal resources in the Xiangfu District.

Key words: geothermal resources, geothermal gradient, temperature field, reinjection potential, development potential

CLC Number:

TE09

SUN Guanyu,BAI Zongxian,LI Hongda, et al. Evaluation of development potential and application prospect of geothermal resources: A case study of Xiangfu District in Kaifeng[J]. Petroleum Reservoir Evaluation and Development, 2024, 14(6): 842-848.

Figures/Tables 8

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References 19

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热储层埋深/m	砂岩层比/%	热导率/[W/（m·K）]
300~450	40.17	1.679
450~600	38.43	1.685
600~800	38.47	1.685
800~1 000	46.35	1.761
1 000~1 300	37.87	1.786
1 300~1 600	45.33	1.764

井位	类别	δD/‰	δ¹⁸O/‰	TU	地热流体年龄/a
尉氏	降水	-9.6	-11.9	—	—
开封市	降水	-58.8	-7.9	15.47	—
郑州西尖岗水库	地表	-57.9	-7.7	19.75	—
郑州西南山区	降水	-37.6	-5.7	37.09	—
磷肥厂（开封市东郊）	地热流体	-75.5	-10.5	—	15 630±310
开封市节水办西郊浅井	地热流体	-72.2	-10.1	<0.50	17 460±230
开封市自来水厂	地热流体	-70.3	-10.3	<0.50	—
开封市646厂	地热流体	-74.8	-10.7	—	—
隆氏公司（开封市西郊）	地热流体	-71.0	-9.8	<0.50	18 910±270
供电局（开封市中部）	地热流体	-72.0	-9.5	—	21 140±430
通许宾馆	地热流体	-70.8	-10.9	—	—
开封市节水办西郊深井	地热流体	-78.2	-10.4	—	22 090±260
汴京饭店（开封市中部）	地热流体	-75.2	-9.5	<0.50	23 040±280
开封市节水办东郊深井	地热流体	-73.1	-9.4	<0.50	24 120±430
通信公司（开封市中部）	地热流体	-68.8	-8.6	<0.50	24 970±330
开封市运管处	地热流体	-78.0	-10.6	0.47	23 130±240
天泉宾馆	地热流体	-64.0	-8.5	0.45	24 400±320
开封风雅颂置业有限公司	地热流体	-76.0	-10.1	0.29	24 170±290
武警指挥学院（中牟县）	地热流体	-73.0	-9.9	0.26	12 610±200
中牟东湖度假村浅井	地热流体	-72.0	-9.6	0.36	13 520±210
兰考蓬莱温泉酒店	地热流体	-77.0	-10.1	0.47	19 420±340
原阳原华温泉	地热流体	-77.0	-10.6	0.27	19 290±260
中牟东湖度假村深井	地热流体	-74.0	-9.7	0.31	13 580±220
郑州黄河迎宾馆园内	地热流体	-70.0	-9.7	0.44	12 210±400
郑州黄河渔场	地热流体	-75.0	-10.1	0.38	12 170±290

热储层	计算分区	可开采量/ （m³/d）	可开采总量/ 10⁹m³	可利用热量/ 10¹⁸J	折合标准煤/ 10⁴t
温水储层	Ⅰ	8 837	3.23	3.53	1.20
温水储层	Ⅱ	10 016	3.66	3.03	1.04
温热水储层	Ⅰ	2 683	0.98	1.74	0.59
温热水储层	Ⅱ	2 968	1.08	1.48	0.51
热水储层	Ⅰ	631	0.23	0.66	0.23
热水储层	Ⅱ	568	0.21	0.52	0.18
合计		25 703	9.39	10.96	3.75

热储层	计算分区	可开采量/ （m³/d）	可开采总量/ 10⁹ m³	可利用热量/ 10¹⁸ J	折合标准煤/ 10⁴ t
温水储层	Ⅰ	333 134	12.16	1.17	3 990
温水储层	Ⅱ	269 122	9.82	0.92	3 140
温热水储层	Ⅰ	104 575	3.82	0.61	2 080
温热水储层	Ⅱ	140 040	5.11	0.77	2 630
热水储层	Ⅰ	92 789	3.39	0.98	3 340
热水储层	Ⅱ	48 626	1.77	0.44	1 500
合计		988 286	36.07	4.89	16 680

Evaluation of development potential and application prospect of geothermal resources: A case study of Xiangfu District in Kaifeng

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