| abstract |
The present invention provides an oilfield crushing agent useful for enhancing oil production and promoting fracturing of an oil well. A specific molecular weight range (100,000 Dalton to 250,000 Dalton) obtained by depolymerizing a galactomannan type polysaccharide polymer and xanthan, preferably galactomannan, to a low molecular weight by irradiation with a high energy electron beam. It contains a galactomannan, a cross-linking agent such as an organometallic borate and an organometallic titanate, and a proppant (support material). [Selection] Figure 1 |