US 12,235,401 B2
Method for improving 2D seismic acquisition
Diogo Michelon, Rio de Janeiro (BR); Joao Luiz Caldeira, Rio de Janeiro (BR); Roberto Baldanza Ribeiro, Rio de Janeiro (BR); Eneas Neto, Rio de Janeiro (BR); and Frederico Silveira De Miranda, Rio de Janeiro (BR)
Assigned to ENEVA S.A., Rio de Janeiro (BR)
Appl. No. 17/432,766
Filed by ENEVA S.A., Rio de Janeiro (BR)
PCT Filed Feb. 20, 2020, PCT No. PCT/BR2020/050051
§ 371(c)(1), (2) Date Oct. 29, 2021,
PCT Pub. No. WO2020/168406, PCT Pub. Date Aug. 27, 2020.
Claims priority of application No. 1020190034653 (BR), filed on Feb. 20, 2019.
Prior Publication US 2022/0146699 A1, May 12, 2022
Int. Cl. G01V 1/30 (2006.01); G01V 1/104 (2006.01); G01V 1/18 (2006.01)
CPC G01V 1/30 (2013.01) [G01V 1/104 (2013.01); G01V 1/181 (2013.01); G01V 2210/1212 (2013.01); G01V 2210/1299 (2013.01); G01V 2210/1429 (2013.01); G01V 2210/324 (2013.01); G01V 2210/60 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method for improving 2D seismic acquisition, comprising
using explosives source with different weights distributed in single charges,
incrementing the frequency spectrum resulting from wave generation,
stacking seismic records,
improving resolution quality and continuity of the recorded reflections and carrying out at least the following steps:
incrementally distributing the charges;
individually firing of charges; and
processing and stacking of records performed under the previous conditions,
wherein the step of incrementally distributing the charges further comprises organizing the disposition of the plurality of dynamite charges, and
wherein the explosive charges are dynamite and are distributed along a seismic line in a decreasing sequence configuration of weights of reference charges (C), in the form of: C, 3/4C, C/2, C/4 or C/n.