基于多项式曲线拟合的海上地震勘探拖缆定位

doi:10.11947/j.AGCS.2022.20200588

测绘学报 ›› 2022, Vol. 51 ›› Issue (5): 772-780.doi: 10.11947/j.AGCS.2022.20200588

基于多项式曲线拟合的海上地震勘探拖缆定位

余文坤¹, 吴佩达¹, 张昊楠^2,3, 胡广浩^2,3, 阮福明^2,3, 戴吾蛟¹, 匡翠林¹

1. 中南大学地球科学与信息物理学院, 湖南长沙 410083;
2. 中海油田服务股份有限公司物探事业部, 天津 300451;
3. 海洋石油勘探国家工程实验室, 北京 100028

收稿日期:2020-12-30 修回日期:2021-12-25 出版日期:2022-05-20 发布日期:2022-05-28
作者简介:余文坤(1987-),男,博士,讲师,研究方向为高精度测量与导航数据处理。E-mail:geowkyu@csu.edu.cn
基金资助:
国家自然科学基金（41674011；41774040）

Offshore towed-streamer seismic positioning based on polynomial curve fitting

YU Wenkun¹, WU Peida¹, ZHANG Haonan^2,3, HU Guanghao^2,3, RUAN Fuming^2,3, DAI Wujiao¹, KUANG Cuilin¹

1. School of Geosciences and Info-physics, Central South University, Changsha 410083, China;
2. China Oilfield Services Limited Geophysical Division, Tianjin 300451, China;
3. National Engineering Laboratory for Offshore Oil Exploration, Beijing 100028, China

Received:2020-12-30 Revised:2021-12-25 Online:2022-05-20 Published:2022-05-28
Supported by:
The National Natural Science Foundation of China (Nos. 41674011;41774040)

摘要/Abstract

摘要： 海上拖缆地震勘探作业过程中电缆在形状上通常呈现为光滑的曲线，传统的拖缆定位大多基于坐标递推的数值方式，对声学距离、罗经鸟方位角等观测值的建模在理论上不够严密。为使观测值得到更加充分的利用，本文提出一种基于多项式曲线拟合电缆形状的平差定位模型。使用我国南海某工区海上拖缆勘探作业的实际数据进行测试，结果表明，本文模型估计的检波点位置精度约4.5 m，与传统模型相比精度最大改善率为58.1%，因此，本文模型能够更好地保障高精度海上地震勘探作业的顺利进行。

关键词: 海上地震勘探, 拖缆定位, 多项式曲线拟合, 严密平差

Abstract: In offshore towed-streamer seismic exploration, the streamers are generally smooth curves in shape. Traditional streamer positioning approaches often recursively compute the coordinates by numerical integration, in which observations such as acoustic distance and compass azimuth cannot be rigorously modeled in theory. To make full use of these observations, a rigorous adjustment positioning model based on polynomial curve fitting is proposed. The experimental results based on survey datasets demonstrate that the positioning accuracy of the seismic point estimated by the new algorithm is about 4.5 m, and the maximum accuracy improvement rate is 58.1% compared with the traditional algorithm. Therefore, the new algorithm can better ensure the progress of the high-precision offshore towed-streamer seismic exploration.

Key words: offshore seismic exploration, towed-streamer positioning, polynomial curve fitting, rigorous adjustment

中图分类号:

P229

余文坤, 吴佩达, 张昊楠, 胡广浩, 阮福明, 戴吾蛟, 匡翠林. 基于多项式曲线拟合的海上地震勘探拖缆定位[J]. 测绘学报, 2022, 51(5): 772-780.

YU Wenkun, WU Peida, ZHANG Haonan, HU Guanghao, RUAN Fuming, DAI Wujiao, KUANG Cuilin. Offshore towed-streamer seismic positioning based on polynomial curve fitting[J]. Acta Geodaetica et Cartographica Sinica, 2022, 51(5): 772-780.

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基于多项式曲线拟合的海上地震勘探拖缆定位

Offshore towed-streamer seismic positioning based on polynomial curve fitting

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