May 21 (Reuters) - Indian shares opened higher on Thursday, supported by a sharp drop in oil prices as investors assessed signs that the U.S. may be nearing a deal with Iran to end the Middle East conflict.

The benchmark Nifty 50 rose 0.72% to 23,830.05 and the BSE Sensex gained 0.55% to 75,732.42, as of 9:15 a.m. IST.

All 16 major sectors logged gains. The broader small-caps and mid-caps rose 0.7% each.

Other Asian markets gained 2.9%. U.S. President Donald Trump said on Wednesday that negotiations with Iran were in their final stages, supporting expectations of a peace deal to end the Middle East conflict.

Meanwhile, two Chinese oil tankers exited the Strait of Hormuz on Wednesday, shipping data showed, a tentative sign of easing pressure in the Gulf.

Brent crude fell 5.6% on Wednesday and was up 0.8% in Thursday trade, hovering near $106 a barrel. [O/R] 

(Reporting by Bharath Rajeswaran in Bengaluru; Editing by Harikrishnan Nair and Ronojoy Mazumdar)